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2–4 minutes · Contrast matrix and color tokens · No signup
Brand Palette Contrast Audit
Check every color pairing and find usable text colors for your palette.
How the result works
WCAG sRGB relative luminance produces (lighter + 0.05) / (darker + 0.05). AA normal text requires 4.5:1 and large text 3:1; ratios are evaluated before display rounding.
Method reviewed 2026-10-19 by Artyom Sklyarov, SUUR.
A worked example
Black on white is 21:1. White on white is 1:1 and fails. Each pair must be checked for its actual text size and role.
What to check next
Opaque sRGB hex colors only. Images, gradients, alpha blending, focus visibility and complete accessibility need separate review.