This information is from The Electronic Publishing Forum #28

An Internet Color Code Guide

When writing HTML code for your web site you can specify both the background color and the color of the text by entering a six digit number in the appropriate tag. We mostly use a white background on our pages. The code for this is:
BGCOLOR="#FFFFFFF" In most cases we use black for text. This is the default, and you don't need to specify the color, but if you wished to do so, the code is this:
FONT COLOR="#000000"

Below are color samples and codes for the various colors available for Internet use. Note that some of the light colors will be difficult to distinguish from the white background. They are most effective when a dark background is specified.

This color is Alice Blue #f0f8ff
This color is Antique white #faebd7
This color is Aquamarine #7fffd4
This color is Azure #f0ffff
This color is Biege #f5f5dc
This color is Bisque #ffe4c4
This color is Black #000000
This color is Blanched Almond #ffebcd
This color is Blue #0000ff
This color is Blue-violet #8a2be2
This color is Brown #a52a2a
This color is Burlywood #deb887
This color is Cadet Blue #5f9ea0
This color is Chartreuse #7fff00
This color is Chocolate #d2691e
This color is Coral #ff7f50
This color is Cornflower Blue #6495ed
This color is Cornsilk #fff8dc
This color is Cyan #00ffff
This color is Dark Goldenrod #b8860b
This color is Dark Green #006400
This color is Dark Khaki #bdb76b
This color is Dark Olive Green #556b2f
Thiscolor is Dark Orange #ff8c00
This color is Dark Orchid #9932cc
This color is Dark Salmon #e9967a
This color is Dark Sea Green #8fbc8f
This color is Dark Slate Blue #483d8b
This color is Dark Slate Gray #2f4f4f
This color is Dark Turquoise #00ced1
This color is Dark Violet #9400d3
This color is Deep Pink #ff1493
This color is Deep Sky Blue #00bfff
This color is Dim Gray #696969
This color is Dodger Blue #1e90ff
This color is Firebrick #b22222
This color is Floral White #fffaf0
This color is Forest Green #228b22
This color is Green #00ff00
This color is Gainsboro #dcdcdc
This color is Ghost White #f8f8ff
This color is Gold #ffd700
This color is Goldenrod #daa520
This color is Gray #bebebe
This color is Honeydew #f0fff0
This color is Hot Pink #ff69b4
This color is Indian Red #cd5c5c
This color is Ivory #fffff0
This color is Khaki #f0e68c
This color is Lavender #e6e6fa
This color is Lavender Blush #fff0f5
This color is Lawn Green #7cfc00
This color is Lemon Chiffon #fffacd
This color is Light Blue #add8e6
This color is Light Coral #fo8080
This color is Light Cyan #e0ffff
This color is Light Goldenrod #eedd82
This color is Light Gray #d3d3d3
This color is Light Pink #ffb6c1
This color is Light Salmon #ffa07a
This color is Light Sea Green #20b2aa
This color is Light Sky Blue #87cefa
This color is Light Slate Blue #8470ff
This color is Light Slate Gray #778899
This color is Light Steel Blue #b0c4de
This color is Light Yellow #ffffe0
This color is Lime Green #32cd32
This color is Linen #faf0ec
This color is Magenta #ff00ff
This color is Maroon #b03060
This color is Medium Aqaumarine #66cdaa
This color is Medium Blue #0000cd
This color is Medium Orchid #ba55cd
This color is Medium Purple #9370db
This color is Medium Sea Green #3cb371
This color is Medium Slate Blue #7b68ee
This color is Medium Spring Green #00fa9a
This color is Medium Turquoise #48d1cc
This color is Medium Violet Red #c71585
This color is Midnight BLue #191970
This color is Mint Cream #f5fffa
This color is Misty Rose #ffe4e1
This color is Moccasin #ffe4b5
This color is Navajo White #ffdead
This color is Navy #000080
This color is Old Lace #fdf5e6
This color is Olive Drab #6b8e23
This color is Orange #ffa500
This color is Orange Red #ff4500
This color is Orchid #da70d6
This color is Pale Goldenrod #eee8aa
This color is Pale Green #98fb98
This color is Pale Turquoise #afeeee
This color is Pale Violet Red #db7093
This color is Papaya Whip #ffefd5
This color is Peach Puff #ffdab9
This color is Peru #cd853f
This color is Pink ffc0cb
This color is Plum #dda0dd
This color is Powder Blue #b0e0e6
This color is Purple #a020f0
This color is Red #ff0000
This color is Rose Brown #bc8f8f
This color is Royal Blue #4169e1
This color is Saddle Brown #8b4513
This color is Salmon #fa8072
This color is Sandy Brown #f4a460
This color is Sea Green #2e0b59
This color is Seashell #fff5ee
This color is Sienna #a0522d
This color is Sky Blue #87ceeb
This color is Slate Blue 6a5acd
This color is Slate Gray #708090
This color is Snow #ffafaf
This color is Spring Green #00ff7f
This color is Steel Blue #4682b4
This color is Tan #d2b48c
This color is Tomato #ff6347
This color is Thistle #d8fd8
This color is Turquoise #40e0d0
This color is Violet #3382ee
This color is Violet Red #d02090
This color is Wheat #f5deb3
This color is White #ffffff
This color is White Smoke #f5f5f5
This color is Yellow #ffff00
This color is Yellow Green #9acd32

Note: In some cases you may want to use the color by name. In those cases, make the name all one word and in lower case; Medium Aquamarine above becomes "mediumaquamarine" and Light Goldenrod becomes "lightgoldenrod," etc.