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Contrast checker

Check a text and background pair against the WCAG AA and AAA thresholds.

colorweb

4.54:1contrast ratio
  • AANormal text, needs 4.5:1Pass
  • AALarge text, needs 3:1Pass
  • AAANormal text, needs 7:1Fail
  • AAALarge text, needs 4.5:1Pass

Large text, the size a heading is set in.

Normal text, the size most of a page is set in. Read this sentence at arm's length. If any of it is hard going, the pair of colours behind it is doing you no favours.

Related tools

Converting a file should not mean handing it to a stranger.

Every other converter asks you to upload first. Yours never leaves the tab.

Read, converted and handed back, all in this tab.
No request is ever made. There is no server to make it to.
  1. toolhut.io
    01

    Load once

    After that it works with the network off.

  2. 02

    Work here

    Your file is processed on your own processor.

  3. 03

    Keep nothing

    Close the tab and every trace is gone.

Answers to your questions

Need anything else? Ask on GitHub.

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Every line is public and MIT licensed. Check it, fork it, or build the next tool.

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