Resources for visual accessibility of web sites
Presented by Catharine McNally at TCDrupal2016
Color blindness simulator
If the design fails to work well in simulator, send it back, before implementation.
4.5% of world is colorblind: 8% of men, 0.5% of women.
WCAG Contrast checker Firefox add-on
Easily calculate color contrast ratios and if meets minimum standards
Avoid links that have no context in themselves such as "click here" or "read more"— screen reader users typically scan links.
Use Drupal 8, it gets lots of things right.
Do it for your users, yourself, your lawyer, for SEO...