accessibility
🔒 Processed locally — color luminance calculation.
WCAG Color Contrast Ratio Checker
Free online WCAG color contrast checker. Test foreground text and background color accessibility ratios.
Tool Configuration Options
Input Data
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Result Output
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Status: Ready⚡ Instant Client Calc
How WCAG Color Contrast Ratio Checker Works
Free online WCAG color contrast checker. Test foreground text and background color accessibility ratios. OmniDeck processes this tool using 🔒 Processed locally — color luminance calculation..
Frequently Asked Questions
What is the minimum WCAG AA contrast ratio?
4.5:1 for normal text and 3:1 for large text (18pt+ or 14pt bold).
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