Loading Legacy
Contrast Checker verifies color contrast ratios against WCAG 2.1 standards to ensure your designs are accessible.
Contrast Checker is a high-performance utility designed to help users streamline their workflow. Built with modern web technologies, it ensures fast processing times and high-quality outputs directly in your browser.
We calculate the relative luminance of foreground and background colors to determine the contrast ratio based on the official WCAG 2.1 contrast formula.
It's the standard accessibility level requiring a 4.5:1 ratio for normal text.
Yes, high contrast is essential for users with visual impairments.