Add-ons
To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
Close
WCAG Contrast checker 1.5.1.1-signed.1-signed Requires Restart
by Rumoroso
Checks for compliance with the contrast levels, brightness and shine in the color combination of foreground and background of textual content based on the requirements of WCAG 1 and WCAG 2.
![[Warning]](https://addons.cdn.mozilla.net/static/img/developers/test-warning.png?b=54591c07-59b80978)
Permissions
$5.00 suggested
Enjoy this add-on?
The developer of this add-on asks that you help support its continued development by making a small contribution.
About this Add-on
You can obtain results for all elements in a web page.
The code color can be introduced manually both in hexadecimal format (in abbreviated way or not, both with and without pad as it), as RGB (may use different dividers between values, such as the comma or two points ). Example:
* In hex could be: # FC5 or FC5 or FFCC55
* In RGB could be: 231.28197 or 231:28:197 or RGB (231.28197)
You can see the sidebar panel selecting de extension from the tools menu or by clicking on the icon that appears in the status bar, and even with the combination of keyboard alt + c.
The code color can be introduced manually both in hexadecimal format (in abbreviated way or not, both with and without pad as it), as RGB (may use different dividers between values, such as the comma or two points ). Example:
* In hex could be: # FC5 or FC5 or FFCC55
* In RGB could be: 231.28197 or 231:28:197 or RGB (231.28197)
You can see the sidebar panel selecting de extension from the tools menu or by clicking on the icon that appears in the status bar, and even with the combination of keyboard alt + c.
