{
  "slug": "whocanuse",
  "name": "WhoCanUse",
  "url": "https://whocanuse.com",
  "cat": "design",
  "group": "design",
  "tagline": "Contrast and vision simulator",
  "price": "Free · open source",
  "tier": "free",
  "pick": false,
  "what": "Contrast checker that goes past the WCAG ratio. Enter a foreground and background pair and it simulates that combination through red-blindness, green-blindness, blue-yellow confusion and full colour blindness, plus cataracts, glaucoma, low vision, direct sunlight and night-shift filters. Built by Corey Ginnivan.",
  "why": "It shows you the failure instead of a number, which is what actually changes your mind about a low-contrast grey. Useful for defending a colour choice to a client, or for killing your own.",
  "warn": "It checks one colour pair at a time, so it complements rather than replaces a whole-page automated audit like axe or Lighthouse.",
  "category": {
    "key": "design",
    "name": "Design tools, color & type",
    "desc": "Canvases, palettes, typefaces, icon sets, illustrations. Mostly free.",
    "group": "design",
    "groupName": "Make it look right"
  },
  "freshness": null,
  "health": {
    "ok": true,
    "status_code": 200,
    "final_url": "https://www.whocanuse.com/",
    "checked_at": "2026-08-18T21:45:05.257+00:00"
  },
  "corrected_at": null,
  "upstream_changed_at": null
}