Why Accessibility Matters
- Reaches wider audience
- Legal compliance (ADA, WCAG)
- Better SEO
- Improved user experience for all
Color and Contrast
Contrast Ratios
Minimum requirements:- Normal text: 4.5:1 contrast ratio
- Large text: 3:1 contrast ratio
- UI components: 3:1 contrast ratio
Color Usage
- Don’t rely on color alone to convey information
- Use patterns or labels alongside colors
- Test with color blindness simulators
Text and Typography
Readable Text
- Minimum 16px font size for body text
- Sufficient line height (1.5+)
- Avoid justified text alignment
- Use clear, readable fonts
Headings
- Use proper heading hierarchy (H1 → H2 → H3)
- Don’t skip heading levels
- Make headings descriptive
Images and Media
Alt Text
Provide meaningful descriptions:- Describe the image content
- Include relevant information
- Keep it concise (125 characters)
- Use empty alt="" for decorative images
Videos
- Include captions
- Provide transcripts
- Avoid autoplay with sound
Navigation
Keyboard Access
- All interactive elements keyboard accessible
- Visible focus indicators
- Logical tab order
- Skip navigation links
Links
- Descriptive link text (not “click here”)
- Distinguish links from regular text
- Indicate external links
Forms
Labels
- Every input needs a label
- Labels should be visible
- Associate labels with inputs
Error Messages
- Clear error descriptions
- Identify which field has error
- Provide correction suggestions
Testing Accessibility
Manual Testing
- Navigate with keyboard only
- Use screen reader
- Test with zoom at 200%
- Check color contrast
Automated Tools
- WAVE browser extension
- axe DevTools
- Lighthouse accessibility audit
Lindo.ai Accessibility Features
The AI generates accessible code by default:- Semantic HTML structure
- Alt text prompts for images
- Proper heading hierarchy
- Keyboard-accessible components
Continuous Improvement
- Test with real users
- Gather feedback
- Update regularly
- Stay informed on guidelines