I find it pretty useless-- color is a 3-dimensional space, and this site seems to have left off a dimension (saturation is missing --degree is hue, radius is c

I find it pretty useless-- color is a 3-dimensional space, and this site seems to have left off a dimension (saturation is missing --degree is hue, radius is color). I find http://www.colorschemer.com/ http://www.colorschemer.com/ much more useful, though non-free. In particular they have a cool feature that lets you extract color schemes from photos. Also cool/useful: http://kuler.adobe.com/ http://kuler.adobe.com/