Colors Externals

Article: Color
A good article on using color on your web page.
Article: Color Schemes
An article by MezzoBlue on methods for selecting Color Schemes - some great ideas.
Color Combos by WebDevelopersNotes
More than a dozen pages of example color combos.
Color Schemer Online
A great tool which takes a user-defined color and spits out a large (tweakable!) palette.
ColorCombos.com
Includes a combo tester to view color combos, and a color library for ideas.
ColorPic
A downloadable application which works like an eyedropper tool that you can use anywhere on your screen.
Colour Contrast Analyser
A tool which uses a mathematical formula to determine the contrast between two colors.
EasyRGB Color Harmonies
This tool gives you twelve complimentary colors from a user-defined base color.
Eric Meyer's Color Blender
A very nice tool which actually allows you to save the colors as you create the palette
RGB to Hex Color Converter
Much easier than using a scientific calculator.
SlayerOffice Color Palette Generator
A useful tool which creates 10 shades of a base color at varying degrees of opacity.
Steel Dolphin's Color Scheme Generator
A nice flash-based color scheme generator
Web Color Theory
A flash-based tool for creating color palettes. It lets you drag and compare a limited number of colors.
Web Color Visualizer
A quick display of web-safe colors, along with their hex codes.
WebWhirlers Color Names
Pebble? Alpaca? A list of the named colors your browser will accept.
WebWhirlers Color Wizard
A great tool, written in VBS, which takes a user-defined color and spits out all kinds of complimentary colors.
WellStyled's Color Scheme Generator
A nice tool with many options for creating palettes.