Color contrast refers to the difference between the brightness of the background color and foreground color of digital content. Black text on a white background is very high contrast; light grey text ...

If you choose to use color, you should ensure adequate color contrast, at least a 4.5:1 contrast ratio between the text and background and accessibility friendly colors. Users should be able to scan a ...

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 ...