Log in
Preview of WCAG Contrast checker

WCAG Contrast checker by Rumoroso

Checks for compliance with the contrast levels of foreground and background colors combination based on the requirements of WCAG 2.1

You'll need Firefox to use this extension
Download Firefox and get the extension
Download file
3,823
Users
11
Reviews
4.1 Stars
5
4
4
6
3
0
2
0
1
1
Screenshots
About this extension
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.

The tool also includes two fields in which the colors can be introduced manually to be tested.

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/
Rate your experience
How are you enjoying WCAG Contrast checker?

Star rating saved

Report this add-on for abuse

If you think this add-on violates Mozilla's add-on policies or has security or privacy issues, please report these issues to Mozilla using this form.

Please don't use this form to report bugs or request add-on features; this report will be sent to Mozilla and not to the add-on developer.

Support this developer

The developer of this extension asks that you help support its continued development by making a small contribution.

Contribute now

PermissionsLearn more

This add-on needs to:

  • Access browser activity during navigation
  • Access your data for all websites
More information
Add-on Links
Version
3.7.0
Size
177.99 KB
Last updated
7 days ago (Mar 21, 2023)
Related Categories
License
All Rights Reserved
Privacy Policy
Read the privacy policy for this add-on
Version History
Add to collection
Release notes for 3.7.0
* There is a new the option to open the extension automatically. It can be set to open it always or only in the domain of the page that is active. The way to use it is by a menu (with the "pin" icon) included in the top bar and that includes both options that is open by using the "pin" icon button.
* The button to switch the position of the panel is now available in the main bar.
* It includes some code changes that, although not directly impacting in the user experience, improve the maintainability of the extension.
More extensions by Rumoroso