Color Blender

Choose a preferred color using the color picker below, and a 6-color matching palette (a "blend") will be automatically calculated [...]

Color Vision

Color Oracle takes the guesswork out of designing for color blindness by showing you in real time what people with common color vision impairments wil [...]

Name that color

Color Chart

Color Whore

Nice color palettes: color whore; link via Hicks Design. [...]

Color in Motion

This is rather jolly stuff and it makes you think a bit about colour too: Color in Motion. [...]

Color Synth Axis

Color picker with a difference. (via web graphics). [...]

Color Theory for the Color-Blind

article at Digital Web Magazine. [...]

Color - Method of Action

Brain Crash

Does this look confusing: GREEN, BLUE, YELLOW. Try Brain Crash to test your cognitive skills. [...]

Floating Color Bands and Arcs in Six Directions

PNG color mismatch fix

I've come aross this problem with PNGs on occasion but usually just ignored it thinking it was quirk of Internet Explorer or something. [...]

DHTML Color Picker

Pretty cool colour picker which you can plugin to your own projects. [...]

HTML Color Codes

colour blind barrier free

How to make figures and presentations that are friendly to color blind people. [...]

New Graphic Design layout

Fabric Balls

Shrinter

cool photos

freaky, bubblegum pop photos, with a dark undercurrent by Becky Carter. [...]

Colour Wheel

Color Wheel by Mike HudsonA different take on colour wheel. [...]

Colour contraster

Very nice tool which lets you compare foreground and background colours and even gives you the thumbs-up if the contrast is sufficient: Accessibility [...]

Colorblind Web Page Filter

Displays a web page with a range of filters which simulates how a color-blind web user would see your web site. [...]

Colour palette inspiration

Ten CSS tricks you may not know

Excellent article at Evolt, written by Trenton Moss.UPDATE: here's an alternative to the background-color issue mentioned in point ten... no image [...]