It's a color/hue acuity test. The lower the score, the better. It also shows which areas you have trouble discriminating hues.

I got a 16, which is pretty good! Apparently I have issues in the blue/green range of hues but I actually think that's really interesting. There are many languages/cultures that do not distinguish between blue and green so I won't take it too hard: http://en.wikipedia.org/wiki/Distincti…

http://www.xrite.com/custom_page.as…