Web Colors Homepage
A visual guide to choosing colors for web pages. Here you can experiment with the colors.
http://www.mywebsite.force9.co.uk/web-colors/

ColorCoder
Aids in composing colors trough RGB, HLS, CMY, CMYK and YCbCr color models. Allows you to copy and paste hexadecimal representations, save colors to palette, and capture colors from your screen.
http://www.downi.com/colorcoder/

Safe Colors
A table of hex codes for browser and platform safe colors, which will work on any computer with a resolution of 256 colors or above.
http://www.katieholmes.net/safecolors.html

Pumped-Storage Plant
Diagram from the Tennessee Valley Authority includes colors and labels.
http://www.tva.gov/power/pumpstorart.htm

Modern Printing Colors, Inc.
Manufactures flushed colors, standards, UV, and rub transfer decals.
http://www.moderncolors.com

Davis Colors
Concrete Colors - Davis Colors is the leading manufacturer of Concrete Colors. Visit our award winning web site and find useful information. Color Charts, hundreds of project photos, product information, distributor lists, How-To guides, mix rate calculators, and downloadable Specifications and .pdf brochures. Or call us 800-356-4848.
http://www.daviscolors.com

Biosculpture Nails Canada
Semi-permanent nail colors with matching varnishes and lipsticks in range of colors.
http://www.biosculpturenails.com/

Color Blender
Takes two user-defined valid colors and creates a palette using a set number of points between the colors.
http://www.meyerweb.com/eric/tools/color-blend/

Institute of Plant Physiology at the Bulgarian Acadamy of Sciences
Acad. M. Popov Institute of Plant Physiology of the Bulgarian Academy of Sciences is a research centre for plant physiology and biochemistry in Bulgaria. The main research areas are plant growth and development, regulation of photosynthesis, plant mineral nutrition and plant water relations, and regulation of plant metabolism and gene expression.
http://www.bio21.bas.bg/ipp/

216 Web Safe Colors
Three charts of the safe colors. Each chart explores the effect of Red, Green or Blue on the RGB value, expressed in hexadecimal notation.
http://www.exoticblades.com/tamara/colorchart.html