About WCAG Color Contrast Checker (AA & AAA Standards)
Ensure your websites and applications meet digital accessibility standards. Calculates relative luminance and contrast ratios between foreground and background colors with compliance badges for WCAG AA and AAA normal and large text.
Key Capabilities & Features
- Calculates exact WCAG 2.1 relative luminance and contrast ratio
- Pass/Fail compliance badges for AA and AAA standards
- Live interactive visual preview with normal and heading text
- Color invert toggle and quick accessible presets
How to Use WCAG Color Contrast Checker (AA & AAA Standards)
1
Pick Foreground
Select or input text hex color code.
2
Pick Background
Select or input background hex color code.
3
Verify Compliance
Check the contrast ratio and WCAG AA/AAA pass/fail badges.
Privacy & In-Browser Execution Guarantee
Color calculations run locally in your browser.
Frequently Asked Questions
What contrast ratio is required for WCAG AA compliance?
WCAG 2.1 AA requires a contrast ratio of at least 4.5:1 for normal body text and at least 3.0:1 for large text (18pt or 14pt bold).
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