Color Contrast Checker
Pick two colors. Instantly see if they meet WCAG accessibility standards.
Colors
Text Color
RGB: 251, 255, 0
Background Color
RGB: 0, 0, 0
Contrast Score
21.00
:1
Contrast Ratio
AA Normal
✓ Pass
AAA Normal
✓ Pass
AA Large
✓ Pass
AAA Large
✓ Pass
Export
Design for everyone,
not just some.
Accessible design is good design. Test your colors before you ship to make sure every user can read your content clearly.
Why Contrast Matters
Good contrast ensures your content is readable by everyone, including people with low vision or color blindness. WCAG AA requires 4.5:1 for normal text.
AA Standard
Min 4.5:1 for normal text. Required for ADA compliance.
AAA Standard
Min 7:1 for normal text. Best for maximum accessibility.
Small text · Captions · Labels · This size needs the highest contrast ratio
Tip
✓ Excellent — passes WCAG AAA for all text sizes.
Improve Contrast
Click to get accessible alternatives.
Color Inspirations
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Palette Contrast Grid
Add your brand colors to check every combination at once.
Contrast Grid
Each cell shows the contrast ratio between the row and column color.