Color Contrast Analyzer —
Free Online WCAG Contrast Tool
Analyze any color pair against WCAG AA and AAA standards instantly. Free color contrast analyzer — live preview, colorblind simulation, palette grid, auto-fix. No signup.
Open the Free Color Contrast Analyzer
Enter any two colors — get a complete WCAG contrast analysis with pass/fail badges, ratio, colorblind simulation, and auto-fix.
Analyze Color Contrast Free →What a Color Contrast Analyzer Shows You
A color contrast analyzer calculates the luminance difference between two colors and expresses it as a ratio. It then compares that ratio against WCAG thresholds to show which accessibility standards the combination passes or fails.
Web Asset Suite's analyzer shows pass/fail badges for all four WCAG thresholds simultaneously (AA, AAA, AA Large, AAA Large), simulates how the colors appear under three types of color blindness, previews the colors in a live webpage layout, and suggests the nearest passing color via the Auto-fix button.
Color Contrast Analyzer vs Colour Contrast Checker
A color contrast analyzer and a color contrast checker perform the same function: calculating the contrast ratio between two colors and comparing it against WCAG standards. The terms are used interchangeably.
The tool at webassetsuite.com/contrast-checker performs a full contrast analysis — ratio calculation, WCAG threshold comparison, colorblind simulation, live preview, and export. It works identically for all use cases regardless of whether you search for analyzer or checker.