reason for 2 color contrast levels

Why are there 2 levels for color contrast (AA and AAA)? Does AAA apply to specific cases? Is the rule of thumb to comply with both?

Thanks,

Char Easter
UX Designer at The Seattle Times
p: 206.464.2945
e: ceaster@seattletimes.com

Received on Friday, 24 June 2016 08:41:14 UTC