Analyze the contrast ratio between foreground and background colors for WCAG readability.
How to Use Color Contrast Checker
Pick or type your foreground (text) color and background color.
The tool calculates the exact contrast ratio and shows a live text preview.
Check the WCAG AA/AAA pass-fail indicators for both normal and large text sizes.
Key Features & Practical Use Cases
Verifying that text foreground and background colors meet standard WCAG AA/AAA accessibility ratios.
Ensuring that light-gray text on white backgrounds is legible for visually impaired users.
Testing brand color combinations to find accessible color pairings for UI design.
Frequently Asked Questions
What contrast ratio do I need to pass WCAG AA?
At least 4.5:1 for normal text, or 3:1 for large text (18pt+, or 14pt+ bold) - the tool shows both thresholds automatically.
What's the difference between AA and AAA?
AAA is the stricter standard (7:1 for normal text, 4.5:1 for large text) - AA is the more commonly required baseline for most accessibility compliance.
Does passing this check guarantee full accessibility?
It confirms color contrast specifically - full accessibility also depends on things like semantic HTML, keyboard navigation, and alt text, which this tool doesn't check.
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