AccessiWeb Color Contrast Tester

Check the contrast ratio between two colors according to WCAG.

AccessiWeb Color Contrast Tester is a Google Chrome extension designed to help developers, designers, content editors, and accessibility auditors quickly verify the contrast between text and background directly while browsing. The tool allows you to check the contrast ratio between two colors according to WCAG AA and AAA criteria, view a real-time preview of the chosen combination, select the dominant colors of the current page, and simulate certain visual conditions for a more informed visual evaluation. Key Features ✅ Manual color selection via color picker. ✅ Direct entry of HEX values for text and background. ✅ Immediate calculation of the contrast ratio. ✅ Verification of WCAG AA and AAA compliance levels for normal text, large text, UI components, and graphical objects. ✅ Real-time preview of the text/background combination. ✅ Detection of 8 dominant colors on the current page. ✅ Quick assignment of detected colors to text or background. ✅ Quick swap button to invert text and background colors. ✅ Copy results to clipboard. ✅ History of recent combinations. ✅ Visual simulation of the page in grayscale. ✅ Indicative simulations for protanopia, deuteranopia, and tritanopia. ✅ Intuitive, accessible, and fully keyboard-navigable interface. How does it work? - Install the extension and open any web page. - Click on the AccessiWeb Color Contrast Tester icon in the toolbar. - Manually select two colors or use the dominant colors detected on the page. - Choose whether to assign a color to the text or the background. - Check the contrast ratio and WCAG AA/AAA compliance results. - Use the preview, copy feature, or visual simulations to complete your evaluation. AccessiWeb Color Contrast Tester is ideal for anyone who designs, develops, or evaluates web interfaces and wants to quickly identify color combinations that are more readable, inclusive, and compliant with accessibility requirements. 🔗 Learn more about AccessiWeb and improve your website's accessibility! 🚀