Accessible Colors
Web helper that suggests accessible color adjustments when a pair fails contrast requirements.
Home / Color Contrast / APCA Contrast Calculator
APCA contrast resources and calculators for evaluating perceptual contrast beyond classic WCAG 2 contrast ratios.
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Web helper that suggests accessible color adjustments when a pair fails contrast requirements.
Web tool in Adobe Color for checking whether chosen color pairs meet WCAG contrast requirements.
Online contrast checker from the Polypane browser team for validating text and UI color pairs.
Open-source Colour Contrast Analyser desktop app for measuring text and UI contrast against WCAG thresholds.
macOS menu-bar app for quickly sampling on-screen colors and checking WCAG contrast.
Minimal online contrast-ratio calculator for two CSS colors with WCAG level indicators.