Vlad Merzhevich
In HTML, the color is specified in one of two ways: using a hexadecimal code and by the name of some colors. The most commonly used method is based on the hexadecimal system, as the most universal.
Hexadecimal colors
HTML uses hexadecimal numbers to specify colors. The hexadecimal system, unlike the decimal system, is based, as its name implies, on the number 16. The numbers will be the following: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C , D, E, F. Numbers from 10 to 15 are replaced by Latin letters. In table. 6.1 shows the correspondence between decimal and hexadecimal numbers.
Numbers greater than 15 in the hexadecimal system are formed by combining two numbers into one (Table 6.2). For example, the number 255 in decimal corresponds to the number FF in hexadecimal.
To avoid confusion in the definition of the number system, the hexadecimal number is preceded by the pound sign #, for example #aa69cc. In this case, the case does not matter, so it is permissible to write #F0F0F0 or #f0f0f0.
A typical color used in HTML is as follows.
Here, the background color of the web page is set to #FA8E47. The pound sign # in front of a number means it is in hexadecimal. The first two digits (FA) define the red component of the color, the third to fourth digits (8E) the green component, and the last two digits (47) the blue component. The end result is this color.
| FA | + | 8E | + | 47 | = | FA8E47 |
Each of the three colors - red, green and blue - can take values from 00 to FF, which eventually forms 256 shades. Thus, the total number of colors can be 256x256x256 = 16.777.216 combinations. The color model based on the red, green and blue components is called RGB (red, green, blue; red, green, blue). This model is additive (from add - add), in which the addition of all three components forms white.
To make it easier to navigate in hexadecimal colors, take into account some rules.
- If the values of the color components are the same (for example: #D6D6D6), then a gray tint will be obtained. The higher the number, the lighter the color, and the values change from #000000 (black) to #FFFFFF (white).
- A bright red color is formed if the red component is made maximum (FF), and the rest of the components are set to zero. The color with the value #FF0000 is the reddest possible red tint. The same is true for green (#00FF00) and blue (#0000FF).
- Yellow (#FFFF00) is obtained by mixing red with green. This is clearly seen on the color wheel (Fig. 6.1), which presents the primary colors (red, green, blue) and complementary or complementary. These include yellow, cyan, and violet (also called magenta). In general, any color can be obtained by mixing colors adjacent to it. So, cyan (#00FFFF) is obtained by combining blue and green.
Rice. 6.1. Color circle
Colors based on hexadecimal values do not have to be empirically selected. For this purpose, a graphic editor that can work with different color models, such as Adobe Photoshop, is suitable. On fig. 6.2 shows a window for choosing a color in this program, the line circles the resulting hexadecimal value of the current color. You can copy and paste it into your code.
Rice. 6.2. Color picker in Photoshop
Web Colors
If you set the color quality of the monitor to 8 bits (256 colors), then the same color can be displayed differently in different browsers. This has to do with the way graphics are rendered when the browser is working with its own palette and cannot show a color that it doesn't have in the palette. In this case, the color is replaced by a combination of pixels of other, close to it, colors that imitate the given one. In order for the color to remain the same in different browsers, a palette of so-called web colors was introduced. Web colors are those colors, for each component of which - red, green and blue - one of six values \u200b\u200bis set - 0 (00), 51 (33), 102 (66), 153 (99), 204 (CC), 255 (FF). The hexadecimal value of this component is indicated in brackets. The total number of colors from all possible combinations gives 6x6x6 - 216 colors. An example web color is #33FF66.
The main feature of web color is that it is displayed the same in all browsers. At the moment, the relevance of web colors is very small due to the improvement in the quality of monitors and the expansion of their capabilities.
Colors by name
In order not to remember a collection of numbers, you can use the names of commonly used colors instead. In table. 6.3 shows the names of popular color names.
| Color name | Color | Description | Hex value |
|---|---|---|---|
| black | Black | #000000 | |
| blue | Blue | #0000FF | |
| fuchsia | Light purple | #FF00FF | |
| gray | Dark grey | #808080 | |
| green | Green | #008000 | |
| lime | light green | #00FF00 | |
| maroon | Dark red | #800000 | |
| navy | Dark blue | #000080 | |
| olive | Olive | #808000 | |
| purple | Dark violet | #800080 | |
| red | Red | #FF0000 | |
| silver | light gray | #C0C0C0 | |
| teal | blue green | #008080 | |
| white | White | #FFFFFF | |
| yellow | Yellow | #FFFF00 |
It doesn't matter how you specify the color - by its name or by using hexadecimal numbers. In their effect, these methods are equal. Example 6-1 shows how to set the background and text colors of a web page.
Example 6.1. Background and text color
Sample text
In this example, the background color is set using the bgcolor attribute of the tag
, and the color of the text through the text attribute. For variety, the value of the text attribute is set to a hexadecimal number, and bgcolor is set to the reserved keyword teal .Hexadecimal numbers are used to specify colors. The hexadecimal system, unlike the decimal system, is based, as its name implies, on the number 16. The numbers will be the following: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C , D, E, F. Numbers from 10 to 15 are replaced by Latin letters. Numbers greater than 15 in the hexadecimal system are formed by combining two numbers into one. For example, the number 255 in decimal corresponds to the number FF in hexadecimal. To avoid confusion in the definition of the number system, the hexadecimal number is preceded by the hash symbol #, for example #666999. Each of the three colors - red, green and blue - can take values from 00 to FF. Thus, the designation of the color is divided into three components #rrggbb, where the first two characters mark the red component of the color, the two middle ones mark green, and the last two mark blue. It is allowed to use the abbreviated form #rgb, where each character should be doubled. Thus, the entry #fe0 should be regarded as #ffee00.
by name
| Internet Explorer | Chrome | Opera | safari | Firefox | Android | iOS |
| 4.0+ | 1.0+ | 3.5+ | 1.3+ | 1.0+ | 1.0+ | 1.0+ |
Browsers support some colors by name. In table. 1 shows the names, hex code, values in RGB, HSL format and description.
| Name | Color | The code | RGB | HSL | Description |
|---|---|---|---|---|---|
| white | #fffff or #fff | rgb(255,255,255) | hsl(0.0%,100%) | White | |
| silver | #c0c0c0 | rgb(192,192,192) | hsl(0.0%,75%) | Grey | |
| gray | #808080 | rgb(128,128,128) | hsl(0.0%,50%) | Dark grey | |
| black | #000000 or #000 | rgb(0,0,0) | hsl(0,0%,0%) | Black | |
| maroon | #800000 | rgb(128,0,0) | hsl(0,100%,25%) | Dark red | |
| red | #ff0000 or #f00 | rgb(255,0,0) | hsl(0,100%,50%) | Red | |
| orange | #ffa500 | rgb(255,165,0) | hsl(38.8,100%,50%) | Orange | |
| yellow | #ffff00 or #ff0 | rgb(255,255,0) | hsl(60,100%,50%) | Yellow | |
| olive | #808000 | rgb(128,128,0) | hsl(60,100%,25%) | Olive | |
| lime | #00ff00 or #0f0 | rgb(0,255,0) | hsl(120,100%,50%) | light green | |
| green | #008000 | rgb(0,128,0) | hsl(120,100%,25%) | Green | |
| aqua | #00ffff or #0ff | rgb(0,255,255) | hsl(180,100%,50%) | Blue | |
| blue | #0000ff or #00f | rgb(0,0,255) | hsl(240,100%,50%) | Blue | |
| navy | #000080 | rgb(0,0,128) | hsl(240,100%,25%) | Dark blue | |
| teal | #008080 | rgb(0,128,128) | hsl(180,100%,25%) | blue green | |
| fuchsia | #ff00ff or #f0f | rgb(255,0,255) | hsl(300,100%,50%) | Pink | |
| purple | #800080 | rgb(128,0,128) | hsl(300,100%,25%) | Violet |
With RGB
| Internet Explorer | Chrome | Opera | safari | Firefox | Android | iOS |
| 5.0+ | 1.0+ | 3.5+ | 1.3+ | 1.0+ | 1.0+ | 1.0+ |
You can define a color using the red, green, and blue values in decimal terms. Each of the three color components takes a value from 0 to 255. It is also acceptable to set the color as a percentage, while 100% will correspond to the number 255. First, the rgb keyword is specified, and then the color components are specified in brackets, separated by commas, for example rgb(255 , 128, 128) or rgb(100%, 50%, 50%).
RGBA
| Internet Explorer | Chrome | Opera | safari | Firefox | Android | iOS |
| 9.0+ | 1.0+ | 10.0+ | 3.1+ | 3.0+ | 2.1+ | 2.0+ |
The RGBA format is similar in syntax to RGB, but includes an alpha channel that sets the element's transparency. A value of 0 is fully transparent, 1 is opaque, and an intermediate value like 0.5 is translucent.
RGBA is added to CSS3, so validation of CSS code should be carried out according to this version. It should be noted that the CSS3 standard is still under development and some of its features may change. For example, an RGB color added to the background-color property passes validation, but one added to the background property does not. At the same time, browsers quite correctly understand the color for both properties.
HSL
| Internet Explorer | Chrome | Opera | safari | Firefox | Android | iOS |
| 9.0+ | 1.0+ | 9.6+ | 3.1+ | 3.0+ | 2.1+ | 2.0+ |
The name of the HSL format is formed from a combination of the first letters Hue (hue), Saturate (saturation) and Lightness (lightness). Hue is the color value on the color wheel (Fig. 1) and is specified in degrees. 0° is red, 120° is green, and 240° is blue. Hue value can vary from 0 to 359.
Rice. 1. Color wheel
Saturation is the intensity of a color, measured as a percentage from 0% to 100%. A value of 0% indicates no color and a shade of gray, 100% is the maximum saturation value.
Lightness sets how bright the color is and is specified as a percentage from 0% to 100%. Small values make the color darker, while high values make it lighter, extreme values of 0% and 100% correspond to black and white.
HSLA
| Internet Explorer | Chrome | Opera | safari | Firefox | Android | iOS |
| 9.0+ | 1.0+ | 10.0+ | 3.1+ | 3.0+ | 2.1+ | 2.0+ |
The HSLA format is similar in syntax to HSL, but includes an alpha channel that sets the element's transparency. A value of 0 is fully transparent, 1 is opaque, and an intermediate value like 0.5 is translucent.
Color values in RGBA, HSL and HSLA formats are added to CSS3, so when using these formats, check the code for validity against the version.
HTML5 CSS2.1 CSS3 IE Cr Op Sa Fx
Warning
All methods of catching a lion listed on the site are theoretical and based on computational methods. The authors do not guarantee your safety when using them and disclaim any responsibility for the result. Remember, the lion is a predator and a dangerous animal!
The result of this example is shown in Fig. 2.
Rice. 2. Colors on the web page
Color codes in CSS are used to specify colors. Typically, color codes or color values are used to set a color for either the foreground of an element (eg, text, link color) or the element's background (background, block color). They can also be used to change button color, borders, marker, hover and other decorative effects.
You can set your color values in various formats. The following table lists all possible formats:
These formats are described in more detail below.
CSS Colors - Hex Codes
Hexadecimal color code is a six-digit color representation. The first two digits (RR) are the red value, the next two are the green value (GG) and the last two are the blue value (BB).
CSS Colors - Short Hex Codes
Short hexadecimal color code is a shorter form of six-character notation. In this format, each digit is repeated to produce the equivalent six-digit color value. For example: #0F0 becomes #00FF00.
The hexadecimal value can be taken from any graphics software such as Adobe Photoshop, Core Draw, etc.
Each hexadecimal color code in CSS will be preceded by a "#" hash sign. The following are examples of the use of hexadecimal notation.
CSS Colors - RGB Values
RGB value is a color code that is set using the rgb() property. This property takes three values: one each for red, green, and blue. The value can be an integer, from 0 to 255, or a percentage.
Note: Not all browsers support the rgb() color property, so it's not recommended to use it.
Below is an example showing multiple colors using RGB values.
Color code generator
You can create millions of color codes with our service.
Safe Browser Colors
Below is a table of 216 colors that are the most secure and computer independent. These colors in CSS range from 000000 to FFFFFF hex code. They are safe to use as they ensure that all computers will display color correctly when working with the 256 color palette.
| Table of "safe" colors in CSS | |||||
| #000000 | #000033 | #000066 | #000099 | #0000CC | #0000FF |
| #003300 | #003333 | #003366 | #003399 | #0033CC | #0033FF |
| #006600 | #006633 | #006666 | #006699 | #0066CC | #0066FF |
| #009900 | #009933 | #009966 | #009999 | #0099CC | #0099FF |
| #00CC00 | #00CC33 | #00CC66 | #00CC99 | #00CCCC | #00CCFF |
| #00FF00 | #00FF33 | #00FF66 | #00FF99 | #00FFCC | #00FFFF |
| #330000 | #330033 | #330066 | #330099 | #3300CC | #3300FF |
| #333300 | #333333 | #333366 | #333399 | #3333CC | #3333FF |
| #336600 | #336633 | #336666 | #336699 | #3366CC | #3366FF |
| #339900 | #339933 | #339966 | #339999 | #3399CC | #3399FF |
| #33CC00 | #33CC33 | #33CC66 | #33CC99 | #33CCCC | #33CCFF |
| #33FF00 | #33FF33 | #33FF66 | #33FF99 | #33FFCC | #33FFFF |
| #660000 | #660033 | #660066 | #660099 | #6600CC | #6600FF |
| #663300 | #663333 | #663366 | #663399 | #6633CC | #6633FF |
| #666600 | #666633 | #666666 | #666699 | #6666CC | #6666FF |
| #669900 | #669933 | #669966 | #669999 | #6699CC | #6699FF |
| #66CC00 | #66CC33 | #66CC66 | #66CC99 | #66CCCC | #66CCFF |
| #66FF00 | #66FF33 | #66FF66 | #66FF99 | #66FFCC | #66FFFF |
| #990000 | #990033 | #990066 | #990099 | #9900CC | #9900FF |
| #993300 | #993333 | #993366 | #993399 | #9933CC | #9933FF |
| #996600 | #996633 | #996666 | #996699 | #9966CC | #9966FF |
| #999900 | #999933 | #999966 | #999999 | #9999CC | #9999FF |
| #99CC00 | #99CC33 | #99CC66 | #99CC99 | #99CCCC | #99CCFF |
| #99FF00 | #99FF33 | #99FF66 | #99FF99 | #99FFCC | #99FFFF |
| #CC0000 | #CC0033 | #CC0066 | #CC0099 | #CC00CC | #CC00FF |
| #CC3300 | #CC3333 | #CC3366 | #CC3399 | #CC33CC | #CC33FF |
| #CC6600 | #CC6633 | #CC6666 | #CC6699 | #CC66CC | #CC66FF |
| #CC9900 | #CC9933 | #CC9966 | #CC9999 | #CC99CC | #CC99FF |
| #CCCC00 | #CCCC33 | #CCCC66 | #CCCC99 | #CCCCCC | #CCCCFF |
| #CCFF00 | #CCFF33 | #CCFF66 | #CCFF99 | #CCFFCC | #CCFFFF |
| #FF0000 | #FF0033 | #FF0066 | #FF0099 | #FF00CC | #FF00FF |
| #FF3300 | #FF3333 | #FF3366 | #FF3399 | #FF33CC | #FF33FF |
| #FF6600 | #FF6633 | #FF6666 | #FF6699 | #FF66CC | #FF66FF |
| #FF9900 | #FF9933 | #FF9966 | #FF9999 | #FF99CC | #FF99FF |
| #FFCC00 | #FFCC33 | #FFCC66 | #FFCC99 | #FFCCCC | #FFCCFF |
| #FFFF00 | #FFFF33 | #FFFF66 | #FFFF99 | #FFFFCC | #FFFFFF |
>>Color Management
Hexadecimal RGB color values
Methods for describing and processing colors differ from each other in what final representation they are intended for. Let's compare, for example, representations of colors for polygraphy and for computer monitors. In the first case, the basis is white the color of the paper on which the three primary colors are subsequently applied: blue, purple and yellow. Mixing with each other and with the white color of paper in different proportions, these three primary colors give different color shades, except for pure black, or in the complete absence of colors they give white paper. If we add black to them, we get CMYK- a method of color transfer when the required color is obtained by subtracting the missing colors from white.
In the second case, the basis is black the color of the monitor screen, each cell of which glows in one of three colors: red-red, green-green and blue-blue. Then, in the complete absence of any glow, we get a pure black color of the screen, and any of the required colors is given by the ratio of each of the three colors. In this case we will get RGB- Color transfer method. Primary colors can have meanings from 0
before 255
, or from 0%
before 100%
, or can be represented as a hexadecimal value. In the figure below you can see the results of mixing primary colors.
The hexadecimal number system, unlike the decimal number system, has not ten digits in its series of digits, but sixteen - hence the name. Accordingly, non-repeating variants of combinations of two digits can only be - 256 , to continue the series of digits after 9 letters from A before F, so the row will look like this -
| 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F. |
In this case, the color is given by three hexadecimal numbers, each consisting of two digits. The first number determines the intensity red colors, average green, last thing- blue colors. All numbers can take values ranging from 00 before FF(from 0 to 255). For example: green color is given as #00FF00, red - like #FF0000, blue - like #0000FF, white - like #FFFFFF, complete absence of color or black is given as #000000 .
In the form below, you can set any hexadecimal values for each of the three colors and see the result of their mixing by clicking in the output field.
Examples of some hexadecimal RGB color values: red, blue, and green gradations.
| view | the code | view | the code | view | the code | view | the code | view | the code | view | the code |
| #010000 | #800000 | #000100 | #008000 | #000001 | #000080 | ||||||
| #100000 | #900000 | #001000 | #009000 | #000010 | #000090 | ||||||
| #200000 | #A00000 | #002000 | #00A000 | #000020 | #0000A0 | ||||||
| #300000 | #B00000 | #003000 | #00B000 | #000030 | #0000B0 | ||||||
| #400000 | #C00000 | #004000 | #00C000 | #000040 | #0000C0 | ||||||
| #500000 | #D00000 | #005000 | #00D000 | #000050 | #0000D0 | ||||||
| #600000 | #E00000 | #006000 | #00E000 | #000060 | #0000E0 | ||||||
| #700000 | #FF0000 | #007000 | #00FF00 | #000070 | #0000FF |
Specifying a Color with String Literals
For ease of use, some colors and their combinations were given names that are recognized by all browsers and it became possible to set many of them by name. The table below shows some of the color names:
| view | name | view | name | view | name | view | name |
| White | Red | Orange | Yellow | ||||
| Green | Blue | Purple | Black | ||||
| Alice blue | antique white | Aqua | aquamarine | ||||
| Azure | Beige | Bisque | blanchedalmond | ||||
| Blueviolet | Brown | Burlywood | Cadet blue | ||||
| chartreuse | Chocolate | Coral | Cornflowerblue | ||||
| Cornsilk | Crimson | cyan | dark blue | ||||
| Darkcyan | darkgoldenrod | darkgray | dark green | ||||
| Darkkhaki | Darkmagenta | Darkolivegreen | darkorange | ||||
| Darkorchid | dark red | darksalmon | Darkseagreen | ||||
| darkslate blue | darkslate gray | darkturquoise | Darkviolet | ||||
| Deeppink | deep sky blue | Dimgray | dodger blue | ||||
| Firebrick | Floral white | forest green | Fuschia | ||||
| Gainsboro | ghost white | Gold | Goldenrod | ||||
| Gray | Greenyellow | Honeydew | hotpink | ||||
| Indian Red | Indigo | Ivory | Khaki | ||||
| Lavender | Lavenderblush | Lemonchiffon | light blue | ||||
| light coral | lightcyan | lightcoldenrodyellow | light green | ||||
| lightgray | Lightpink | light salmon | Lightsea green | ||||
| Lightskyblue | Lightslate gray | light steel blue | lightyellow | ||||
| lime | Limegreen | linen | Magenta | ||||
| maroon | mediumaquamarine | medium blue | Medium orchid | ||||
| Medium purple | Mediumseagreen | Mediumslateblue | Mediumspringgreen | ||||
| medium turquoise | mediumvioletred | midnight blue | mintcream | ||||
| mistyrose | Navajowhite | Navy | oldlace | ||||
| Olive | Olivedrab | orange red | Orchid | ||||
| palegoldenrod | Palegreen | paleturquoise | palevioletred | ||||
| papayawhip | Peachpuff | Peru | Pink | ||||
| Plum | Powder blue | Rosybrown | royal blue | ||||
| saddlebrown | seagreen | Seashell | Sienna | ||||
| Silver | sky blue | Slate blue | Slategray | ||||
| Snow | Springgreen | steel blue | Tan | ||||
| Teal | Thistle | Tomato | Turquoise | ||||
| violet | Wheat | Whitesmoke | yellowgreen |
Using a Safe Color Picker
Unfortunately, on different platforms, with different system settings, correct color reproduction is a problem. The thing is that the browser always tries to adjust the color palette of the document to the system settings and monitor capabilities, by mixing and replacing colors on its own. As a result, sometimes the user sees not quite what the webmaster wanted to show him. The way out of this situation was found in the use of a palette, each color of which is guaranteed to be rendered the same by all browsers on different platforms. This so-called guaranteed palette, also known as safe palette. This palette includes colors whose color components take on the following values: 00 ,33 ,66 ,99 , CC,FF, in all possible 216 their combinations.
| view | the code | view | the code | view | the code | view | the code | view | the code | view | the code |
| FFFFFF | CCCCCC | 999999 | 666666 | 333333 | 000000 | ||||||
| CCCC66 | CCCC33 | 999966 | 999933 | 999900 | 666600 | ||||||
| CCFF66 | CCFF00 | CCFF33 | CCCC99 | 666633 | 333300 | ||||||
| 99FF00 | 99FF33 | 99CC66 | 99CC00 | 99CC33 | 669900 | ||||||
| CCFF99 | 99FF99 | 66CC00 | 66CC33 | 669933 | 336600 | ||||||
| 66FF00 | 66FF33 | 33FF00 | 33CC00 | 339900 | 009900 | ||||||
| 33FF33 | 00FF33 | 00FF00 | 00CC00 | 33CC33 | 00CC33 | ||||||
| CCFFCC | 99CC99 | 66CC66 | 669966 | 336633 | 003300 | ||||||
| 99FF99 | 66FF66 | 33FF66 | 00FF66 | 339933 | 006600 | ||||||
| 66FF99 | 33FF99 | 00FF99 | 33CC66 | 00CC66 | 009933 | ||||||
| 66CC99 | 33CC99 | 00CC99 | 339966 | 009966 | 006633 | ||||||
| 99FFCC | 66FFCC | 33FFCC | 00FFCC | 33CCCC | 009999 | ||||||
| CCFFFF | 99FFFF | 66FFFF | 33FFFF | 00FFFF | 00CCCC | ||||||
| 99CCCC | 66CCCC | 339999 | 669999 | 006666 | 336666 | ||||||
| 66CCFF | 33CCFF | 00CCFF | 3399CC | 0099CC | 003333 | ||||||
| 99CCFF | 3399FF | 0099FF | 6699CC | 336699 | 006699 | ||||||
| 0066FF | 3366CC | 0066CC | 0033FF | 003399 | 003366 | ||||||
| 6699FF | 3366FF | 0000FF | 0000CC | 0033CC | 000033 | ||||||
| 3333FF | 3300FF | 3300CC | 3333CC | 000099 | 000066 | ||||||
| 9999CC | 6666FF | 6666CC | 666699 | 333399 | 333366 | ||||||
| CCCCFF | 9999FF | 6666FF | 6600FF | 330099 | 330066 | ||||||
| 9966CC | 9966FF | 6600CC | 6633CC | 663399 | 330033 | ||||||
| CC99FF | CC66FF | 9933FF | 9900FF | 660099 | 663366 | ||||||
| CC66FF | CC33FF | CC00FF | 9900CC | 996699 | 660066 | ||||||
| CC99CC | CC66CC | CC33CC | CC00CC | 990099 | 993399 | ||||||
| FFCCFF | FF99FF | FF66FF | FF33FF | FF00FF | CC3399 | ||||||
| FF66CC | FF00CC | FF33CC | CC6699 | CC0099 | 990066 | ||||||
| FF99CC | FF3399 | FF0099 | CC0066 | 993366 | 660033 | ||||||
| FF6699 | FF3399 | FF0066 | CC3366 | 996666 | 663333 | ||||||
| CC9999 | CC6666 | CC3333 | CC0000 | 990033 | 330000 | ||||||
| FFCCCC | FF9999 | FF6666 | FF3333 | FF0000 | CC0033 | ||||||
| FF6633 | CC3300 | FF3300 | FF0000 | CC0000 | 990000 | ||||||
| FFCC99 | FFCC66 | FF6600 | CC6633 | 993300 | 660000 | ||||||
| FF9900 | FF9933 | CC9966 | CC6600 | 996633 | 663300 | ||||||
| FFCC66 | FFCC00 | FFCC33 | CC9900 | CC9933 | 996600 | ||||||
| FFFFCC | FFFF99 | FFFF66 | FFFF33 | FFFF00 | CCCC00 |
Unfortunately, it is not yet possible to display taste sensations on the site. But this can be fully compensated with the help of colors. After all, html colors allow you to display any of the millions of shades. So that " colored pencils” in his set is much more than seven.
color scheme in html
In html, color can be specified in several formats:
1. As a hexadecimal value - the code specified in the hexadecimal system is used. Such color codes in html consist of three pairs of hexadecimal numbers. Each pair is responsible for the saturation of the hue with its primary color:
- The first numeric pair is responsible for the red color;
- The second pair is for the content of the green color;
- The latter is for the content of the blue color.
At the beginning of the code (before the numbers), a hash mark is placed. This is the hexadecimal color code. In addition to numbers from 1 to 9, this number system uses letters of the Latin alphabet (A, B, C, D, E, F).
For example, white color code in html would look like #FFFFFF:
2. Keyword - Right now html supports about 147 keywords. But not all of these words are unique. Some of them refer to the same color shade.
Gray is represented by two keywords: gray and gray . Their hexadecimal code (HEX ) is given by the same value #808080 .
Example :
#808080
3. In RGB format - this color encoding in html is based on the use of three values set in the range from 0 to 255. Each of them determines the saturation of the hue with one of the primary colors:
- R - red (red);
- G - green (green);
- B - blue (blue).
The color number in RGB format is written as follows: rgb(0, 210, 100).
background-color:rgb(100,186,43)
4. In RGBA format - it is an advanced RGB format, where the fourth value specifies the transparency of the color in the form of a decimal fraction from 0 to 1.
Usage example:
background-color:rgba(100,86,143,0.2)
background-color:rgba(100,86,143,0.5)
background-color:rgba(100,86,143,0.8)
background-color:rgba(100,86,143,1)
html color tables and color generators
With such a wide range of color setting formats, it is easy to get confused. Therefore, a special color table was invented. In it, to 147 key names of color shades, codes of correspondence are given in all major standards for color representation. Additionally, each field is equipped with a bar for visual color matching. One of these tables is presented on the site colorscheme.ru:
But even with the help of such a structuring of correspondence, the selection of the desired shade can be difficult. And it’s not a fact that there is the right one in the color code table.
To get around this barrier and make it as easy as possible to select the right shade, interactive web services have been developed. Their user interface may differ slightly from each other.
On the html-color-codes.info site, the color generator looks like this:
And within the color-picker.appsmaster.co service, this tool is implemented a little differently:
The saturation of each color in the generator is set using special sliders. Visually, the hue is displayed by the color of the frame and rectangle on the left side. At the bottom, 3 fields display the color code in the main formats.
But the color generator is available not only on specialized sites. Almost all graphic editors are equipped with a similar tool. For example, Photoshop:
Color Safety
And it was a long time ago, back in the era of video cards that support only 256 colors. In those days, operating systems could display only a certain number of eight-bit shades without distortion.
Then the great table of safe colors was bred. It indicated 216 shades that could be displayed without distortion in any of the browsers of that time. And to this day this great manuscript» is still available on some resources:
Everything has changed in our time. Therefore, all safety rules when working with color in html are completely canceled. After all, modern computer hardware supports more than 16 million different shades. And 216 safe colors have sunk into oblivion.
