About Color Contrast Checker Free — Test WCAG 2.1 AA & AAA Compliance
Ensure your website meets ADA and Section 508 legal accessibility requirements by verifying color contrast ratios against official WCAG 2.1 standards.
Key Features & Capabilities
- Calculates exact contrast ratio (e.g. 4.5:1, 7:1, 21:1)
- Instant Pass/Fail badges for WCAG 2.1 Level AA and AAA standards
- Separate evaluations for Normal Text, Large Text, and UI Components
- Live interactive text preview on background color
- 100% private in-browser accessibility testing
How to Check WCAG Color Contrast
Step 1: Select Foreground Text Color
Enter the HEX code of your text.
Step 2: Select Background Color
Enter the HEX code of your background container.
Step 3: Review Compliance
Check if the calculated contrast ratio passes WCAG AA and AAA requirements.
Frequently Asked Questions
What is the minimum contrast ratio required for WCAG AA?
WCAG 2.1 Level AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text (18pt or 14pt bold).
Why is color contrast important?
Accessible contrast ensures that individuals with low vision, color blindness, or aging eyesight can comfortably read your website content.
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