= Accessibility
== disabilities

hemianopia (black on one side and shadow increases towards that side)
macular degeneration (grey spot in the middle)
diabetic retinopathy (little contrast and random areas of normal vision)
glaucoma (bullseye)
tritanopia (colors are often mapped to green)
protanopia (dark colors are violet, bright colors are green)

== standards

WAI (Web Accessibility Initiative)
Web Content Accessibility Guidelines (WCAG) 2.2