A color contrast isn't just a design preference, it's what makes content readable for everyone, including users with low vision or color blindness, and it's required under WCAG, ADA, and Section 508. Accesstive Color Contrast Checker gives you a fast, free way to test any text and background color pairing before it ships.
Enter your foreground and background colors using HEX or RGB values, and the tool instantly calculates the contrast ratio using the WCAG-recommended luminance formula. See at a glance whether your combination meets Level AA (4.5:1 for normal text, 3:1 for large text) or Level AAA (7:1 and 4.5:1) requirements, for both text and non-text elements like buttons, icons, and form borders. If a combination doesn't pass, adjust the colors live and watch the ratio update in real time until it does.
Built for designers, developers, content creators, and anyone building for the web, the tool works across common use cases: checking button and link states, validating light/dark mode themes, choosing accessible palettes for charts and social graphics, or reviewing overlay text on images. It's a lightweight addition to any design or QA workflow, and a practical first step toward broader compliance alongside Accesstive's full accessibility platform.
Why Accesstive Color Contrast Checker?
Instant contrast ratio calculation for HEX or RGB color pairs
Checks against both WCAG 2.2 AA and AAA thresholds
Covers text and non-text elements (buttons, icons, form borders)
Live color adjustment with real-time ratio updates
Swap and reset controls for quick comparisons
No signup required, free to use
Supports designers, developers, content creators, and QA workflows
Practical first step toward full WCAG, ADA, and Section 508 compliance