WCAG Contrast Checker
Contains adsIn-app purchases
Everyone
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About this app
WCAG Contrast Checker is the fast, pocket-sized tool for designers, developers, and accessibility auditors who need to verify color contrast against WCAG 2.1 AA and AAA standards — right on their phone.
Pick any two colors, see the contrast ratio instantly, and know whether your palette passes or fails for normal text, large text, and every WCAG level — all offline.
FEATURES
• Live contrast ratio display (e.g. 4.50:1) updated in real time
• WCAG 2.1 pass/fail badges: AA normal, AA large, AAA normal, AAA large
• Foreground and background color pickers with HSV color wheel
• Swap foreground and background colors in one tap
• Live sample panel — preview your actual text colors as you pick
• Color-blind simulation: Protanopia, Deuteranopia, Tritanopia
• Palette tab: paste up to 6 hex codes, generate a pairwise contrast matrix
• Light, dark, and system theme
• Works fully offline — no account, no internet
HONEST SCOPE
This app checks contrast ratios and simulates color-blindness for up to 6 colors at a time. It does not offer a camera eye-dropper, CSV/JSON export, or full-site accessibility auditing. It covers WCAG 2.1 contrast criteria — not every accessibility requirement.
Free with ads. One-time purchase removes all ads forever.
Download and ship accessible colors with confidence.
Pick any two colors, see the contrast ratio instantly, and know whether your palette passes or fails for normal text, large text, and every WCAG level — all offline.
FEATURES
• Live contrast ratio display (e.g. 4.50:1) updated in real time
• WCAG 2.1 pass/fail badges: AA normal, AA large, AAA normal, AAA large
• Foreground and background color pickers with HSV color wheel
• Swap foreground and background colors in one tap
• Live sample panel — preview your actual text colors as you pick
• Color-blind simulation: Protanopia, Deuteranopia, Tritanopia
• Palette tab: paste up to 6 hex codes, generate a pairwise contrast matrix
• Light, dark, and system theme
• Works fully offline — no account, no internet
HONEST SCOPE
This app checks contrast ratios and simulates color-blindness for up to 6 colors at a time. It does not offer a camera eye-dropper, CSV/JSON export, or full-site accessibility auditing. It covers WCAG 2.1 contrast criteria — not every accessibility requirement.
Free with ads. One-time purchase removes all ads forever.
Download and ship accessible colors with confidence.
Check WCAG 2.1 AA/AAA color contrast. Free, offline, no account needed.
Updated on
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What’s new
Check color contrast for accessibility. See WCAG AA/AAA pass/fail results for any color pair, enter colors by hex or RGB, swap foreground and background, and preview color-blindness simulations.
App support
About the developer
99ersstudio, LLC
admin@99ersstudio.com
131 Continental Dr Ste 305
Newark, DE 19713-4324
United States
+49 176 24081329
