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WCAG Color contrast checker

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4.2(

26 ratings

)
ExtensionDeveloper Tools70,000 users
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Overview

To check the color contrast between foreground and background of the texts

It checks the color contrast between the foreground and background of the elements that are in the page according to the WCAG 2.2. It evaluates the contrast on all elements of the page considering their computed style for the color and background-color CSS properties. In case of these colors are defined with RGBA values, it also considers the opacity to deduce the real color that finally is show. It can simulate color blindness and evaluate the contrast for the simulations. By this way, developers can see how the pages look for colorblind users. The tool also includes two fields in which the colors can be introduced manually to be tested. It also allows to pick the color directly from the documents. Finally, it auto-refreshes when DOM of the page changes (addition or removing elements), but if the page has many changes, this behavior can be de-activated. Privacy statement on: https://rumoroso.bitbucket.io/

4.2 out of 526 ratings

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K BSep 27, 2024

Haven't had any major issues with it. Works well for what it is and can quickly verify contrast on page across multiple visual deficiencies.

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Orgoth DorngreeAug 7, 2024

Does not really work well, in some cases it detects the wrong colors for for- and background. forground: #ffffff background: #ffffff But on page it is: forground: #ffffff background: rgba(25, 145, 238, 0.8) It also does not respect text-shadows which improve the readability, which is confirmed by people with very bad eyesight.

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Sam RevierMar 21, 2024

Love it! Would be great if you could add support for APCA and Oklch colors as well.

1 out of 2 found this helpful

Details

  • Version
    3.8.4
  • Updated
    March 2, 2024
  • Offered by
    Jorge Rumoroso
  • Size
    163KiB
  • Languages
    English
  • Developer
    Email
    rumoroso@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

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