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Contrast

WCAG contrast checker for accessible color palettes

Design ToolsaccessibilitywcagcontrastcolordesignFreeShipped 2mo ago
Overview

Overview

About this app

Huelab validates color pairings against WCAG 2.1 AA and AAA accessibility standards. Enter foreground and background hex colors to instantly see the computed contrast ratio and pass-fail badges for each compliance level. A live preview shows how text renders at multiple font weights with your chosen colors. Save approved pairs to build a personal palette library that persists across sessions. All calculations run in-browser with no external dependencies, making it fast and private for design teams reviewing color systems.

How to use

  1. Enter foreground color
    Paste or type a hex color code (e.g., #FFFFFF) into the foreground input field.
  2. Enter background color
    Paste or type a hex color code (e.g., #767676) into the background input field.
  3. View contrast ratio and badges
    The app displays the computed contrast ratio and shows green (pass) or red (fail) badges for AA and AAA compliance levels.
  4. Preview text rendering
    See how your text appears at multiple font weights using the foreground and background colors you selected.
  5. Save the color pair
    Click the Save Pair button to store this combination in your personal palette library for future reference.
  6. Manage saved pairs
    View all saved pairs in the list below. Click any pair to reload its colors into the checker, or delete pairs you no longer need.

More screenshots

WCAG AA and AAA pass-fail badges
WCAG AA and AAA pass-fail badges
Saved pairs library
Saved pairs library
Text preview at multiple weights
Text preview at multiple weights