Leosghost - 2:56 am on Sep 11, 2011 (gmt 0)

Also relevant and tangential...
[juicystudio.com...]

especially the

luminositycontrastratio*
page

and the

coloursaferatio*
page

the tools on that site may be of use to some.

closed some tabs;-)

*page titles given so as to avoid 3 links to the site in the same post..although IMO the site merits many links..and a good read / look around.