Contrast reader (little JS tool I made)

[Randombase]

I wondered how Google AdSense knows when to change the colour of the foreground text so it doesn't become invisible/hard to read, so made a little experiment to try it out myself. It has become a slightly different tool that tells you how readable your text is.

Link:
http://iron.randombase.com/colorchecker.html

DP scores a "perfect" for readability:
Foreground: #000000
Background: #E4F5E7

If you think it has completely failed at evaluating your colours, please post them here so I can finetune it a bit :).

[GreatMetro]

Nice Job Randombase

[wing]

Good idea, really good :)