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CLUSTER CONTRAST-ACCESSIBILITY-COLOR · 14 ENTRIES · EARLIEST ENTRY 2023-05-20

Color contrast accessibility tools

This cluster comprises 13 products centered on color contrast checking and accessibility compliance, including contrast ratio calculators, WCAG compliance checkers, and tools that generate accessible palettes or simulate color blindness. The dated history is too thin to read a shape from, as only 3 dated entries exist before the index start, and 9 members have no source date. Traction is led by accessible-slides with 1 star, while Kontrast and Contrast trail with 0 stars each.

Entry timeline

ENTRY TIMELINE

MAY 2023: 1JUN 2025: 1APR 2026: 1AUG 2026: 6SEP 2026: 5
MAY 2023SEP 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 2 ai-built · 1 hand-coded · 11 unlabelled

Operator · 4 hobby · 3 open source · 7 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 14 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01accessible-slides1★1 mo—hobbyWeb app that audits slides, posters, and figures for color blindness, contrast, and text size readability at real viewing distance.
  2. 02Ratio0★19 daysliveopen sourceDesktop utility that validates color contrast against WCAG accessibility standards for text and UI elements.
  3. 03Kontrast0★3 molivehand-codedopen sourceColor contrast checker that verifies whether color combinations meet accessibility standards for readable text.
  4. 04Contrast0★2 yrabandonedliveopen sourceUtility that checks whether the contrast between two colors meets WCAG accessibility requirements.
  5. 05sitescope0★7 mostaleliveai-builtWebsite audit tool that extracts colors, fonts, font weights, and effects to summarize a site's visual system.
  6. 06Accessible Color Palette Generator0★unknownliveai-builtWeb tool that generates accessible OKLCH color palettes with color blindness simulation and WCAG contrast ratio checks.
  7. 07Color Contrast Checker0★unknownliveWeb tool that checks the contrast ratio between two colors for accessibility compliance.
  8. 08Pa11y - A tool to generate accessible color palettes0★unknownliveWeb app that generates accessible color palettes and checks WCAG contrast ratios for color combinations.
  9. 09Color Contrast Checker0★unknownlivehobbyWeb tool that checks color contrast between foreground and background colors for WCAG accessibility compliance.
  10. 10Cool Contrast - Optimize the accessibility of your colors0★unknownliveWeb tool that checks color contrast between text and background to ensure WCAG accessibility compliance.
  11. 11Accessible Combos0★unknownliveWeb tool that generates accessible color combinations for interfaces to ensure readability and contrast compliance.
  12. 12getkontrast.vercel.app0★unknownliveWeb app that checks color contrast between foreground and background for accessible interface design.
  13. 13Contrasting0★unknownlivehobbyColor contrast checker that shows the contrast ratio between two picked colors along with their hex codes for accessibility testing.
  14. 14Color Contrast Checker ✅ | Ensure WCAG Accessibility0★unknownlivehobbyWeb app that checks color contrast ratios against WCAG accessibility standards to help designers create readable content.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.