Working Draft

Date: Apr. 18, 2002
Link: http://www.w3.org/TR/css3-color
Source Author or Organization: W3C

This specification describes the properties and values for the "Color" module used by CSS Level 3 to style XML and HTML documents.

New properties include "opacity" for setting the transparency of an element, "color-profile" to specify an International Color Committee (ICC) color, "rendering-intent" for rendering with a color profile other than the default, and "color" for defining a foreground color. A color unit is defined as either a keyword or a Red/Green/Blue (RGB) numerical value, and color keywords from HTML 4 and X11 are listed as well as the RGB numeric color value equivalents. Gamma correction is also addressed for Cathode Ray Tube (CRT) displays under Windows, Unix, Mac OS, SGI and NeXT.

Existing CSS1 and CSS2 properties and values are described as well as new proposals for CSS3. A small number of CSS3 variants (called "profiles") will extend this document as user agents require additional color related properties and values. The '@color-profile' rule defined in Scalable Vector Graphics (SVG) will be included in a future draft.