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Color Contrast Checker

Check WCAG 2.1 color contrast ratios for accessibility.

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Sample Heading Text

The quick brown fox jumps over the lazy dog. This is body text at 16px to demonstrate readability at normal size.

16.96:1
Contrast Ratio
WCAG 2.1 Results
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AA Normal Text
Min 4.5:1 — Body text, UI components
PASS
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AA Large Text
Min 3:1 — 18pt+ or 14pt+ bold
PASS
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AAA Normal Text
Min 7:1 — Enhanced: body text
PASS
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AAA Large Text
Min 4.5:1 — Enhanced: large text
PASS

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Check contrast before colors ship to production

A palette can look beautiful and still fail accessibility requirements. This checker helps you test foreground and background combinations against WCAG contrast thresholds so you can catch issues before they land in a design system, component library, or live product.

What the results tell you

The tool shows the contrast ratio and whether the pair passes common WCAG levels for:

  • normal text at AA
  • large text at AA
  • normal text at AAA
  • large text at AAA

Why this matters in real projects

Color contrast checks are useful when you need to:

  • validate brand colors in UI components
  • test text on buttons, cards, and banners
  • review accessibility during design handoff
  • avoid unreadable combinations for low-vision users

Passing contrast is not the whole story

A pair can technically pass and still feel uncomfortable at small sizes or light weights. After the ratio looks good, it is still worth reviewing the live preview in realistic text sizes before treating the combination as final.