WCAG Contrast Checker
Color Accessibility Tester
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
See the exact WCAG contrast ratio between any two colors and know instantly whether your text passes AA or AAA — no guesswork, no spreadsheets, no waiting for a compliance report.
Most contrast tools make you copy hex codes into a website, squint at a number, then start over. ColorContrast does it live: pick a foreground and background color and the ratio, the AA/AAA verdict, and a real text preview all update the moment you tweak a shade. When a pair fails, it finds the nearest passing color for you — same hue, one tap to apply.
WHAT YOU GET
- The exact WCAG 2.1 contrast ratio for any color pair, recalculated live as you adjust
- Clear AA and AAA pass or fail verdicts for normal text, large text, and UI components
- A real sample-text preview at every size, so you see exactly what a reader sees
- One-tap Fix that nudges a failing color to the closest accessible shade
- A full palette audit that scores every color pair at once in a contrast matrix
- Saved color pairs you can reopen, copy, and share as plain text anytime
PERFECT FOR
- UI and product designers shipping accessible interfaces
- Front-end and app developers checking color tokens against WCAG
- Brand and marketing teams keeping type legible on any background
- Anyone who wants readable color choices without the accessibility jargon
WHY NOT JUST USE A FREE WEB CHECKER?
Web checkers make you leave your design, paste hex codes one pair at a time, and give you a number with no fix. ColorContrast lives on your phone, updates in real time, previews real text, audits a whole palette at once, and hands you the nearest passing color instead of just failing you.
PRIVACY
Everything runs 100% on your device. No account, no ads, no tracking, and it works fully offline.
FULL ACCESS
The Check tab and the WCAG Guide are free forever. Auto-Fix, the full palette audit, and unlimited saved pairs unlock with ColorContrast Premium, available as a weekly plan, a yearly plan, or a one-time lifetime purchase — pick whatever fits your workflow.
Pick your two colors and get an honest AA/AAA answer in seconds.
Terms of Use (EULA): https://web-levi.web.app/terms
Privacy Policy: https://web-levi.web.app/privacy-policy
Questions? https://web-levi.web.app/#contact
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes and performance improvements.
Subscriptions
In-App Purchases
The developer, Phuc Pham, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Phuc Pham
- Size
- 4.7 MB
- Category
- Graphics & Design
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Palette Audit — Pay Once $29.99
- Colorblind Safe Yearly $14.99
- Text Legibility Weekly $2.99
- Copyright
- © 2026 Phuc Pham