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CSS Legal Color Values


CSS Colors

CSS colors can be specified using the following methods:


Hexadecimal Colors

All major browsers support hexadecimal color values.

A hexadecimal color is specified with: #RRGGBB, where RR (red), GG (green) and BB (blue). All values must be between 00 and FF.

Example


RGB Colors

RGB color values are supported in all major browsers.

An RGB color value is specified with: RGB(red, green, blue). Each parameter (red, green, and blue) defines the intensity of the color and can be an integer between 0 and 255 or a percentage value (from 0% to 100%).

For example, RGB(0,0,255) is rendered as blue, because the blue parameter is set to its highest value (255) and the others are set to 0.

Additionally, the following values define the same color: RGB(0,0,255), RGB(0%,0%,100%).

Example


RGBA Colors

RGBA color values are supported by IE9, Firefox 3+, Chrome, Safari, and Opera 10+.

RGBA color values are an extension of RGB color values with an alpha channel - which specifies the opacity of the object.

An RGBA color value is specified with: RGBA(red, green, blue, alpha). The alpha parameter is a number between 0.0 (fully transparent) and 1.0 (fully opaque).

Example


HSL Colors

HSL color values are supported by IE9, Firefox, Chrome, Safari, and Opera 10+.

HSL stands for hue, saturation, and lightness - and represents a cylindrical-coordinate representation of colors.

An HSL color value is specified with: HSL(hue, saturation, lightness).

Hue is a degree on the color wheel (from 0 to 360) - 0 (or 360) is red, 120 is green, 240 is blue. Saturation is a percentage value; 0% means a shade of gray and 100% is the full color. Lightness is also a percentage; 0% is black, 100% is white.

Example


HSLA Colors

HSLA color values are supported by IE9, Firefox 3+, Chrome, Safari, and Opera 10+.

HSLA color values are an extension of HSL color values with an alpha channel - which specifies the opacity of the object.

An HSLA color value is specified with: HSLA(hue, saturation, lightness, alpha), where alpha is the alpha parameter defining the opacity. The alpha parameter is a number between 0.0 (fully transparent) and 1.0 (fully opaque).

Example


Predefined/Cross-Browser Color Names

147 color names are predefined in the HTML and CSS color specification. You can view our predefined color names table.

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