Here are two more resources:
http://news.ycombinator.com/item?id=1527404 ( ruby focused )
http://particletree.com/notebook/calculating-color-contrast-... ( The above makes reference to it )
Here are two more resources:
http://news.ycombinator.com/item?id=1527404 ( ruby focused )
http://particletree.com/notebook/calculating-color-contrast-... ( The above makes reference to it )