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WCAG Contrast checker 18.104.22.168-signed.1-signed
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.
About this Add-on
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.