Minimum contrast level used for most websites, apps, and product interfaces.
Accessibility Tool
Color Contrast Checker for WCAG-Ready Text and UI
Test text and background colors instantly, review AA and AAA readability, and keep contrast checks inside the same workflow you already use for conversion, combinations, and accessibility review.
- Check color contrast for text, buttons, cards, and interface surfaces.
- Use clear pass and fail feedback before shipping a design or updating a UI system.
- Move from contrast testing to color combinations and blindness simulation in one page flow.
Contrast Checker
Test text and background colors instantly
Start with direct utility and keep the scoring result visible without scrolling.
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#
Contrast
6.18
AA
★★★★★
Small text
✓★★★★★
Large Text
✓★★★★★
AA: Minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text. Required for most websites.
AAA: Enhanced contrast ratio of 7:1 for normal text and 4.5:1 for large text. Recommended for optimal accessibility.
This is a sample text to test color contrast.
This is a sample text to test color contrast.
Accessibility Standards
Keep the meaning of AA and AAA short, visible, and close to the tool.
Higher readability target for accessibility-first products and content-heavy interfaces.
Check buttons, labels, cards, navigation, dashboards, and any text on colored surfaces.
Accessible Color Pairs
Show a few practical combinations so users can move faster after testing.
Strong contrast for product buttons, labels, and hero controls.
Works well for dashboards, cards, and neutral sections with lower glare.
Useful for callouts, warnings, and high-visibility UI states.
Color Combinations
Move from contrast testing to palette planning without leaving the current tool flow.
High contrast pair for direct emphasis and stronger call-to-action states.
Balanced contrast with more room for softer secondary actions and support colors.
Smoother transition for dashboards, charts, and interface surfaces with lower tension.
Blindness Simulator
Check how your tested color behaves across common color-vision conditions.
#2596BE stays bright and easy to spot in standard viewing conditions.
Blue remains readable, while green-heavy UI accents may compress toward similar values.
Warm alerts lose separation faster, so contrast should not rely on red alone.
Blue-yellow distinctions flatten, so score checks should be paired with preview review.
FAQ
WCAG AA requires 4.5:1 for normal text and 3:1 for large text.
AAA requires 7:1 for normal text and 4.5:1 for large text.
It catches readability problems early in buttons, labels, cards, and content surfaces before they become accessibility bugs.