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Design & Color

Free Contrast Ratio Checker — WCAG Accessibility

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Ubify Intelligence Team

EDITORIAL TEAM

~1 min read
~170 words
VERIFIED MAY 2026

About This Tool

The Contrast Ratio Checker calculates the contrast ratio between any foreground and background color — and tells you whether the combination passes WCAG 2.1 AA (4.5:1) and AAA (7:1) standards for both normal and large text. Enter hex codes and see your accessibility score instantly. Free, no account, runs in browser.

How to Use

  1. 1

    Set your foreground (text) color and background color using hex codes or the pickers.

  2. 2

    The contrast ratio appears with pass/fail status for WCAG AA and AAA.

  3. 3

    Adjust colors until you reach a passing ratio for your target standard.

Frequently Asked Questions