CSS uses color values to specify a color. Typically, these are used to set a color either for the foreground of an element (i.e. its text) or else for the background of the element. They can also be used to affect the color of borders and other decorative effects.

You can specify your color values in various formats. Following table lists all the possible formats −

FormatSyntaxDescriptionExample
Keyword<property>: <colorname>CSS has a set of predefined color names that you can use directly.red, blue, green, yellow, black, white, etc.
Hexadecimal Code#RRGGBBStarts with a hash (#) followed by six hexadecimal digits.#FF0000 – red
Short Hexadecimal Code#RGBShorter version of hexadecimal format where each of the RGB components is represented by a single digit, and the value is duplicated.#F00 – red
RGBrgb(red,green,blue)Colors can be defined using the rgb() function, which takes three parameters representing the red, green, and blue values.rgb(0, 0, 255) – blue
RGBArgba()Similar to RGB, with an additional parameter for the alpha (transparency) value. 0 (fully transparent) and 1 (fully opaque)rgba(0,0,255,0.5) – translucent blue
HSLhsl()Colors can be defined using the rgb() function which stands for Hue (0 to 360 degree), Saturation (%), and Lightness (%).hsl(120, 100%, 50%) – pure green
HSLAhsla()Similar to HSL, with an additional parameter for the alpha (transparency) value.hsl(120, 100%, 50%, 0.5) – translucent green
currentcolor KeywordcurrentcolorIt refers to the value of the color property of the element.color: red; /* Red text color */ border: 10px solid currentcolor; /* Red border color */
System coloras per OS or browserCSS allows usage of system colors defined by the user’s OS or browser.ButtonText, Window, WindowText

These formats are explained in more detail in the following sections −

CSS Colors – Keyword

CSS supports the color names to be directly passed to the property background-color and color. 140 standard color names are supported by CSS.

Few of the examples are listed in the table below:

ColorColor Name
 Black
 Red
 Blue
 Green
 Aquamarine

Here is an example:

<html><head><style>
   #colorkeyword{
      background-color: aqua;
      padding: 10px;
   }
</style></head><body><h3>Color Keyword - example</h3><p>As the keyword passed is aqua, the background will appear as aqua colored..</p><div id="colorkeyword">
      This div element has a colored background based on the color keyword passed, i.e aqua.
   </div></body></html>

CSS Colors – Hexadecimal Codes

A hexadecimal is a 6 digit representation of a color. The first two digits(RR) represent a red value, the next two are a green value(GG), and the last are the blue value(BB).

A hexadecimal value can be taken from any graphics software like Adobe Photoshop, Jasc Paintshop Pro, or even using Advanced Paint Brush.

Each hexadecimal code will be preceded by a pound or hash sign ‘#’. Following are the examples of hexadecimal notation.

Note: To specify the hexadecimal codes, you can use upper case or lower case letters.

ColorColor Hexadecimal Code
 #000000
 #FF0000
 #00FF00
 #0000FF
 #FFFF00
 #00FFFF
 #FF00FF
 #C0C0C0
 #FFFFFF

Here is an example:

<html><head><style>
   #hexcode {
      background-color: #00ff00;
      padding: 10px;
}
</style></head><body><h3>Hexadecimal code - example</h3><p>As the hexadecimal code is #00ff00 the background will appear green.</p><div id="hexcode">
         This div element has a green background.
      </div></body></html>

CSS Colors – Short Hexadecimal Codes

This is a shorter form of the six-digit notation. In this format, each digit is replicated to arrive at an equivalent six-digit value. For example: #6A7 becomes #66AA77.

A hexadecimal value can be taken from any graphics software like Adobe Photoshop, Jasc Paintshop Pro, or even using Advanced Paint Brush.

Each short hexadecimal code will be preceded by a pound or hash sign ‘#’. Following are the examples of short hexadecimal notation.

Note: To specify the hexadecimal codes, you can use upper case or lower case letters.

ColorShort Hexadecimal Code
 #000
 #F00
 #0F0
 #0FF
 #FF0
 #0FF
 #F0F
 #FFF

Here is an example:

<html><head><style>
   #shorthex {
      background-color: #00f;
      padding: 10px;
   }
</style></head><body><h3>Short Hexadecimal code - example</h3><p>As the short hexadecimal code is #00f the background will appear blue.</p><div id="shorthex">
         This div element has a blue background.
      </div></body></html>

CSS Colors – RGB Values

  • This color value is specified using the rgb( ) property.
  • It takes three values, one each for red, green, and blue.
  • The value can be an integer between 0 and 255 or a percentage.

NOTE: All the browsers does not support rgb() property of color so it is recommended not to use it.

Following is the example to show few colors using RGB values.

ColorColor RGB
 rgb(0,0,0)
 rgb(255,0,0)
 rgb(0,255,0)
 rgb(0,0,255)
 rgb(255,255,0)
 rgb(0,255,255)
 rgb(255,0,255)
 rgb(192,192,192)
 rgb(255,255,255)

Here is an example:

<html><head><style>
   #rgbvalue {
      background-color: rgb(255,0,255);
      padding: 10px;
   }
</style></head><body><h3>RGB - example</h3><p>As the rgb(255,0,255) is set the background will appear accordingly.</p><div id="rgbvalue">
      This div element has a colored background based on the rgb values.
   </div></body></html>

CSS Colors – RGBA Values

  • This color value is specified using the rgba( ) property.
  • It takes four values, one each for red, green, and blue and the last value as the alpha (transparency) value.
  • The alpha value can be any value between 0 and 1.

NOTE: All the browsers do not support rgba() property of color so it is not recommended.

Following is the example to show few colors using RGBA values.

ColorColor RGBA
 rgba(0,0,0,0)
 rgba(255,0,0,0.2)
 rgba(0,255,0,0.3)
 rgba(0,0,255,0.5)
 rgba(255,255,0,0.7)
 rgba(0,255,255,0.1)
 rgba(255,0,255,1)
 rgba(192,192,192,0.4)
 rgba(255,255,255,1)

Here is an example:

<html><head><style>
   #rgbavalue {
      background-color: rgba(255,0,255,0.2);
      padding: 10px;
   }
</style></head><body><h3>RGBA - example</h3><p>As the rgba(255,0,255,0.2) is set the background will appear with transparency value of 0.2.</p><div id="rgbavalue">
      This div element has a colored background based on the rgba values.
   </div></body></html>

CSS Colors – HSL Values

  • This color value is specified using the hsl() function.
  • HSL stands for hue, saturation and lightness.
  • Hue is represented in degrees (0-360), saturation and lightness are represented as percentages (0% – 100%).

Following is the example to show few colors using HSL property.

ColorColor HSL
 hsl(0,0%,50%)
 hsl(255,80%,70%)
 hsl(290,100%,60%)
 hsl(360,70%,20%)
 hsl(89,80%,67%)

Here is an example:

<html><head><style>
   #hslvalue {
      background-color: hsl(355,70%,50%);
      padding: 10px;
}
</style></head><body><h3>HSL - example</h3><p>As the hsl(355,70%,50%) is set the background will appear based on the hsl values passed.</p><div id="hslvalue">
      This div element has a colored background based on the hsl values hsl(355,70%,50%).
   </div></body></html>

CSS Colors – HSLA Values

  • This color value is specified using the hsl() function.
  • HSLA stands for hue, saturation, lightness and alpha.
  • It takes four values, first for hue, second for saturation, third for lightness and fourth is the alpha (transparency) value.
  • Hue is represented in degrees (0-360), saturation and lightness are represented as percentages (0% – 100%), and alpha value can be in between 0 and 1.

Following is the example to show few colors using HSLA property.

ColorColor HSLA
 hsla(0,0%,50%,0.5)
 hsla(255,80%,70%,1)
 hsla(290,100%,60%,0.2)
 hsla(360,70%,20%,0.4)
 hsla(89,80%,67%,0.9)

Here is an example:

<html><head><style>
   #hslavalue {
      background-color: hsla(355,70%,50%,0.4);
      padding: 10px;
   }
</style></head><body><h3>HSLA - example</h3><p>As the hsla(355,70%,50%,0.4) is set the background will appear based on the hsla values passed, with high transparency.</p><div id="hslavalue">
      This div element has a colored background based on the hsl values hsla(355,70%,50%,0.4).
   </div></body></html>

CSS Colors – currentcolor keyword

The currentcolor keyword signifies the value of the color property of an element. It can be passed to any other styling property using the keyword currentcolor.

Here is an example:

<html><head><style>
   #currcolor {
      color: red;
      border: 5px solid currentcolor;
   }
</style></head><body><h2>The currentcolor Keyword</h2><p>As the currentcolor keyword is used for border after color property is set as red, the border will also appear red.</p><div id="currcolor">
      This div element has a red text color and a red border.
   </div></body></html>

CSS Colors – Building Color Codes

You can build millions of color codes using our Color Code Builder. Check the HTML Color Code Builder.

To use this tool, you would need a Java Enabled Browser.

CSS Colors – Browser Safe Colors

Here is the list of 216 colors which are supposed to be most safe and computer independent colors. These colors vary from hexa code 000000 to FFFFFF. These colors are safe to use because they ensure that all computers would display the colors correctly when running a 256 color palette −

0000000000330000660000990000CC0000FF
0033000033330033660033990033CC0033FF
0066000066330066660066990066CC0066FF
0099000099330099660099990099CC0099FF
00CC0000CC3300CC6600CC9900CCCC00CCFF
00FF0000FF3300FF6600FF9900FFCC00FFFF
3300003300333300663300993300CC3300FF
3333003333333333663333993333CC3333FF
3366003366333366663366993366CC3366FF
3399003399333399663399993399CC3399FF
33CC0033CC3333CC6633CC9933CCCC33CCFF
33FF0033FF3333FF6633FF9933FFCC33FFFF
6600006600336600666600996600CC6600FF
6633006633336633666633996633CC6633FF
6666006666336666666666996666CC6666FF
6699006699336699666699996699CC6699FF
66CC0066CC3366CC6666CC9966CCCC66CCFF
66FF0066FF3366FF6666FF9966FFCC66FFFF
9900009900339900669900999900CC9900FF
9933009933339933669933999933CC9933FF
9966009966339966669966999966CC9966FF
9999009999339999669999999999CC9999FF
99CC0099CC3399CC6699CC9999CCCC99CCFF
99FF0099FF3399FF6699FF9999FFCC99FFFF
CC0000CC0033CC0066CC0099CC00CCCC00FF
CC3300CC3333CC3366CC3399CC33CCCC33FF
CC6600CC6633CC6666CC6699CC66CCCC66FF
CC9900CC9933CC9966CC9999CC99CCCC99FF
CCCC00CCCC33CCCC66CCCC99CCCCCCCCCCFF
CCFF00CCFF33CCFF66CCFF99CCFFCCCCFFFF
FF0000FF0033FF0066FF0099FF00CCFF00FF
FF3300FF3333FF3366FF3399FF33CCFF33FF
FF6600FF6633FF6666FF6699FF66CCFF66FF
FF9900FF9933FF9966FF9999FF99CCFF99FF
FFCC00FFCC33FFCC66FFCC99FFCCCCFFCCFF
FFFF00FFFF33FFFF66FFFF99FFFFCCFFFFFF

CSS Colors – Related Properties

All the properties related to color are listed in the table below:

PropertyDescription
opacitySets the transparency level of an element.
hueRepresents the hue angle of an element.
colorSets the foreground of an element’s text and text decoration.
background-colorSets the color of the background.
border-colorSets the color of the border of an element.
box-shadowAdds a shadow effect around an element.
outline-colorSets the color of the outline around an element.
text-shadowAdds shadow to the text of an element.

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