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Color Contrast Checker — WCAG AA & AAA Accessibility Tool
Check contrast before it becomes a problem.
Some color combinations look fine—until you try to read them. That’s where issues start.
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How it Works
Calculates contrast ratios between text and background colors based on WCAG standards.
Engineered Difference
Unlike cloud-based alternatives, this tool runs entirely locally for maximum speed and privacy.
Operational Benefits
Instant AA and AAA compliance checks
Clear pass or fail results
Helps improve readability
Simple and quick to use
How to Use
1
Step 1
Enter text and background colors.
2
Step 2
View contrast ratio instantly.
3
Step 3
Adjust colors if needed.
Common Use Cases
Frequently Asked Questions
Everything you need to know about using this tool securely.
Q.What contrast ratio is required?
WCAG AA requires at least 4.5:1, while AAA requires 7:1 for better accessibility.