Opticquiz MCP
Color-vision accessibility: check palettes and images for colorblind safety, generate safe palettes, simulate color blindness and create Ishihara-style plates.
Installation
Les étapes d'installation sont dans la documentation ci-dessous. Documentation
Documentation
Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.
Sommaire
OpticQuiz MCP servers
Two MCP servers that let an assistant check and see color the way a colorblind person does — built on a published, open-access color-vision method rather than a rule of thumb.
Both are listed in the official Model Context Protocol registry.
cvdsafe-mcp — check it
| tool | what it does |
|---|---|
checkPalette | Whether a set of colors stays distinguishable under protanopia, deuteranopia and tritanopia — with the conflicting pairs named |
checkImage | Extracts an image's dominant colors and flags the pairs that collapse, each weighted by how much of the image they cover. PNG + JPEG |
generateSafePalette | N colorblind-safe colors, seeded with Okabe–Ito. Never returns an unsafe one |
fixPalette | Repairs a failing palette, staying close to the originals |
checkContrast | WCAG contrast ratio, AA/AAA |
simulateColor | One color under a chosen deficiency |
colorblind-mcp — see it
| tool | what it does |
|---|---|
simulateImage | Recolors a PNG/JPEG the way a deficiency renders it, and returns the image |
plate | Generates an Ishihara-style pseudoisochromatic test plate and returns it |
compareVision | One color under all three deficiencies at once |
simulateColor | A single color under one deficiency, with severity |
Install
Add to claude_desktop_config.json (Settings → Developer → Edit Config):
{
"mcpServers": {
"cvdsafe": { "command": "npx", "args": ["-y", "cvdsafe-mcp"] },
"colorblind": { "command": "npx", "args": ["-y", "colorblind-mcp"] }
}
}Restart, then ask: "Is this palette colorblind-safe: #d7191c, #1a9641, #2166ac?" or "Show me ./dashboard.png the way a deuteranope sees it." Same config shape works in Cursor and other MCP clients.
The method
Colors are simulated with the Machado, Oliveira & Fernandes (2009) deficiency matrices and
compared with CIEDE2000. The method is published open access —
doi.org/10.5281/zenodo.21310578 — and the same engine
ships as installable packages (cvdsafe, cvdsim on PyPI and npm), so any answer these servers
give can be reproduced outside them.
Everything runs locally over stdio. Nothing leaves your machine; images are read from your disk and returned in the response.
Not a legal audit
These check one axis of accessibility — whether colors stay distinguishable under color-vision deficiency. That is not a full WCAG or ADA conformance audit, and passing does not make a product compliant.
Part of OpticQuiz · methodology & disclosure
Questions fréquentes
Qu'est-ce que Opticquiz MCP ?
Color-vision accessibility: check palettes and images for colorblind safety, generate safe palettes, simulate color blindness and create Ishihara-style plates.
Comment installer Opticquiz MCP ?
Suivez les étapes d'installation de sa documentation, affichée sur cette page et dans son dépôt.
Opticquiz MCP est-il open source ?
Son code est public sur GitHub, mais le dépôt ne déclare pas de licence standard.
Qui maintient Opticquiz MCP ?
Il est publié par vince-gonzalez. AI.tn le référence sans le maintenir ni le recommander.
Issu des listes communautaires awesome-mcp-servers et du dépôt GitHub du projet. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.