toolkit

Color Tools

Runs in browser

Pick colors, build palettes, and ensure accessible contrast

How to Use

Check text contrast against WCAG standards.

You will see:

  • Contrast Ratio (e.g. 4.5:1)
  • Pass/Fail for AA & AAA
  • Smart Color Suggestions

Preview

Heading, paragraph, and button samples

Sample Heading

This is a paragraph preview demonstrating current contrast levels. Ensure all body text remains readable.

Contrast Ratio

14.68:1

WCAG AA

Normal Text

Pass

WCAG AA

Large Text

Pass

WCAG AAA

Normal Text

Pass

About Color Contrast Accessibility

Color contrast affects readability for all users, especially those with visual impairments. WCAG (Web Content Accessibility Guidelines) defines minimum contrast ratios to ensure content is accessible.

WCAG Contrast Requirements

AA Normal:
4.5:1 minimum for body text
AA Large:
3:1 for text 18px+ (or 14px+ bold)
AAA Normal:
7:1 enhanced for optimal readability
AAA Large:
4.5:1 for large text

Why Contrast Matters

  • Visual Impairments: Low vision affects 1 in 4 adults
  • Environmental: Sunlight on screens reduces contrast
  • Age: Contrast sensitivity decreases with age
  • Legal: Many countries require accessible websites

💡 Pro Tips

  • Test contrast in both light and dark modes
  • Don't rely on color alone to convey information
  • Consider colorblindness when choosing color pairs
  • Use automated tools in CI/CD for continuous checking

Further Reading