Web Accessibility Best Practices
WCAG 2.2 AA compliance, ARIA usage, keyboard navigation, screen reader support, color contrast, and semantic HTML based on W3C WAI, WebAIM, and MDN.
- Difficulty
- intermediate
- Read time
- 1 min read
- Version
- v1.0.0
- Confidence
- established
- Last updated
Quick Reference
Use semantic HTML first (button, nav, main, header). Only add ARIA when native HTML lacks semantics. Keyboard: all interactive elements focusable with Tab, activated with Enter/Space. Focus visible with 3:1 contrast. Color contrast: 4.5:1 for text, 3:1 for UI components. Skip link to main content. Test with NVDA/VoiceOver.
Use When
- Building any web interface
- Creating interactive components
- Working with forms and navigation
- Adding dynamic content
- Ensuring legal compliance
Skip When
- Internal tools exempt from accessibility laws (rare)
Web Accessibility Best Practices
WCAG 2.2 AA compliance, ARIA usage, keyboard navigation, screen reader support, color contrast, and semantic HTML based on W3C WAI, WebAIM, and MDN.