Accessibility Tools
Ship color and content everyone can use. WCAG 2.2 contrast checking, color-blindness simulation and automatic accessible alternatives.
Contrast Checker
Check the WCAG contrast ratio between any text and background color, with instant…
Color Blind Simulator
See any palette through protanopia, deuteranopia, tritanopia and achromatopsia.
WCAG Checker
Full WCAG 2.2 AA and AAA compliance check for a color pair — normal text, large text and…
Accessible Color Suggestions
Enter a color pair and get the nearest accessible alternative that passes WCAG AA.
Accessibility Score
Get a 0–100 accessibility score for your color combination based on WCAG thresholds.
Readability Checker
Test how readable your text color is on your background at real sizes, with live sample…
Font Contrast Analyzer
Analyze contrast for your exact font sizes and weights — thresholds differ for large and…
Background Contrast Analyzer
Test one text color against multiple candidate backgrounds at once.
Alt Text Generator
Compose correct alt text for informative, functional, decorative and complex images —…
Readability Analyzer
Score your text with Flesch Reading Ease and grade level — plus reading time and…
Accessible Palette Generator
Generate palettes where every color passes WCAG AA as text on white — brand hue preserved.
Font Size Checker
Check whether your font size counts as WCAG large text and which contrast ratio it needs.
Accessibility Report Generator
Test every color pair in your palette at once with a full contrast matrix and…