WCAG Color contrast checker

The WCAG Color contrast checker is a Chrome extension that allows developers and designers to test the color contrast of elements on a webpage according to the WCAG accessibility requirements. It evaluates the contrast between foreground and background colors, taking into account opacity for RGBA values. The tool also includes a color blindness simulation and allows users to manually input colors to be tested. The extension auto-refreshes when DOM changes, but this feature can be deactivated if desired.