WCAG basics
Do accessibility overlays and widgets work?
What accessibility overlays and widgets can and can't do, why disability advocates criticize them, and what actually makes a website accessible.
Topic
WCAG basics
What the Web Content Accessibility Guidelines ask for, in plain English.
Design and color
WCAG color contrast requirements: ratios, rules and fixes
WCAG contrast rules in plain English: 4.5:1 for text, 3:1 for large text, buttons and icons, what's exempt, and how to fix colors that fail.
WCAG basics
What is WCAG 2.2? A plain-English guide
WCAG 2.2 is the current W3C standard for accessible websites. Learn the four principles, levels A, AA and AAA, and the 9 new success criteria.