Tim Brock covers color vision deficiency:
In this blog post and a follow up I’m going to describe why and how we used theming to make diffify.com more accessible to users who suffer from some common visual impairments. Here in Part 1 I’ll cover some of the science and the terminology. Part 2 will look at the actual changes we made.
Click through for a brief discussion of contrast sensitivity and a longer one on color vision deficiency, including why color choice matters.