WCAG 2.1 Color Contrast Ratio Checker (AA & AAA Standards)
Verify foreground and background color contrast ratios in accordance with WCAG 2.1 AA and AAA web accessibility compliance guidelines.
This is a live preview demonstrating text legibility and contrast compliance against the selected background color.
WCAG 2.1 Accessibility Audit Breakdown
WCAG 2.1 Color Contrast Ratio Checker (AA & AAA Standards)
Online color contrast ratio tester for wcag contrast checker. Evaluate WCAG 2.1 AA and AAA standards to ensure digital products are accessible to people with vision impairments.
Step-by-Step Instructions
- Select or type the text foreground color and background color in HEX.
- Check the calculated contrast ratio (e.g. 4.5:1 for standard web text).
- Verify pass/fail badges across normal text, headlines, and UI elements.
Target Search Queries
- +wcag contrast checker
- +color contrast ratio tool
- +accessibility contrast test
- +wcag 2.1 aa aaa check
- +text background contrast
- +web accessibility color tool
- +color blindness contrast
- +contrast ratio calculator
Frequently Asked Questions & CSS Architecture
What is the minimum WCAG AA ratio for normal text?
WCAG 2.1 Level AA requires a contrast ratio of at least 4.5:1 for normal text (under 18pt) and at least 3:1 for large text (18pt or 14pt bold).
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