Contrast Ratio
Contrast Ratio is a utility designed to help developers and designers ensure their web content meets accessibility requirements. By inputting background and foreground colors, users can instantly calculate the contrast ratio and determine if the combination adheres to WCAG guidelines. The tool supports various color formats and provides real-time feedback, making it easy to adjust color palettes for optimal readability and accessibility.
Checked on Oct 19, 2026.
Alternative resources
Radix UI
An open source component library for building accessible, high-quality web applications with React.
Site Punchlist
Automated website accessibility testing tool that crawls pages, groups defects by severity and reach, and provides specific code fixes.
A11Y Style Guide
A living style guide and pattern library focused on accessibility, providing accessible components, HTML markup, and SCSS/CSS code examples.