Color Contrast Accessibility Validator
WCAG 2.1 AA SC 1.4.3 Test for Color Contrast
This is a free color contrast analysis that will display the color contrast issues of a web page per WCAG 2.1 Guidelines. Color Contrast refers to how bright or dark colors appear against each other on screens; particularly with regard to the relative, gray-scale luminosity as perceived by the human eye.
When it comes to website accessibility, the contrast between the text and the text background is a concern for colorblind and other visually impaired users.
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