Aa
Runs locally in your browser

Contrast Checker

Measure WCAG color contrast and show clear pass or fail results.

About this Contrast Checker tool

Contrast Checker processes your input locally in this browser. Nothing entered into this tool is sent to Duck Cloud servers.

How to use it

  1. 1Paste or type your input in the tool.
  2. 2Select the action button or use the displayed keyboard shortcut.
  3. 3Review the result, then copy it or clear the tool.

Example

Use the sample already provided in Contrast Checker, or replace it with your own input.