An accessibility checker tool for validating the color contrast based on WCAG 2.0 and WCAG 2.1 standard. The formula (L1/L2) for contrast is based on [ISO-9241-3] and [ANSI-HFES-100-1988 ...

75). To check if you’re using the right amount of contrast, there is a list of color-contrast checking tools in the color section of the Web Accessibility: Resources webpage.

Download a color contrast checker tool to make sure your content has sufficient levels of contrast. Avoid relying on your eyesight alone to determine whether a color combination can be used or not; ...

Contrast and color use are important, as users must be able to perceive content on a page. You can use accessibility checkers to check for issues such as color contrast ratios. If you choose to use ...