Color Resources

ColorMix	By dithering 2 or 3 browser safe colors, it is possible to make over 10 million different combinations. ColorMix provides a quick and easy way to dither these 216 hex values, reference the possibilities, and download new combinations.
Color Perception Issues.	Diane Wilson points out that not everyone sees colors the same way - if at all.
Web Color Wizardry	by Lynda Weinman.
Through the 6x6x6 Color Cube An Interactive Voyage	The 6x6x6 Color Cube contains the 216 colors that appear without dithering (speckles) in web browsers for the PC and Macintosh platforms. These colors are suitable to use wherever you need areas of pure flat color on your web pages, such as type and line-art illustrations. On these pages you can see the colors against both black and white backgrounds, as well as whatever background you use in your browser.
The 256, oops, 216 colors of Netscape	A look at colors, pallettes, browsers and how to get the most out of the colors you use.
A Standard Default Color Space for the Internet - sRGB	W3C: Hewlett-Packard and Microsoft propose the addition of support for a standard color space, sRGB, within the Microsoft operating systems, HP products, the Internet, and all other interested vendors.
W3C - Colors	The sixteen recognized color names with their hex values plus notes on using colors.
Colors Available HTML	Over 470 colors and their HEX codes. A CGI script powers the automatic color change of the page background color.
Color Center	View how your background, text, and link colors will look before you design your webpage! Hex, Dec, and Pct values given for each color.