2015
2012
2011
2009
CheckMyColours
by Xavier Lacot & 3 others
CheckMyColours is a tool for checking foreground and background color combinations of all DOM elements and determining if they provide sufficient contrast when viewed by someone having color deficits.
2008
Colour Contrast Check - snook.ca
by greut & 30 others (via)
The Colour Contrast Check Tool allows to specify a foreground and a background colour and determine if they provide enough of a contrast "when viewed by someone having color deficits or when viewed on a black and white screen"
better color checker
2007
Online Watercolor Mixing Palette
by ycc2106
This online color mixing palette lets you experiment with mixing primary colors and secondary colors without worrying that you're wasting paint.
