The level AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text (at least 18pt) or bold text. Regarding colors, the standard defines two levels of contrast ratio: AA (minimum contrast) and AAA (enhanced contrast). Color contrast checker tool follows the Web Content Accessibility Guidelines (WCAG), which are a series of recommendations for making the web more accessible. This page provides free color contrast analysis tool that will display the color contrast issues of a web page or chosen color-pair per WCAG 2.1 Guidelines.Ĝolor 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. Calculate the contrast ratio of text and background colors.
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