Colorblind runs on your own machine — the client starts it, so there is no endpoint to ping. 19 installs a week from npm. Last commit 5 Oct 2026.
See a color or image as a colorblind person does; recolor images and make Ishihara plates.
What the code does
We read the source, 4 d ago · rules 995398eba69f
Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.
_M[t] = np.array(json.load(open(os.path.join(here, f"transforms/{name}.json")))["matrix"])
pub = subprocess.run(["npm", "view", pkg, "version"], capture_output=True,
text=True, shell=True).stdout.strip()
w.eval(axeSrc);
execFileSync(process.execPath, [path.join(ROOT, "tools", "build-widgets.js"), "--check"], { stdio: "pipe" });
out.innerHTML=h;
<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-8826956454892311" crossorigin="anonymous"></script>
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Nothing serious here today
Today is the operative word: we check Colorblind every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add colorblind -- npx -y colorblind-mcp{
"mcpServers": {
"colorblind": {
"command": "npx",
"args": [
"-y",
"colorblind-mcp"
]
}
}
}[mcp_servers.colorblind]
command = "npx"
args = ["-y", "colorblind-mcp"]{
"mcpServers": {
"colorblind": {
"command": "npx",
"args": [
"-y",
"colorblind-mcp"
]
}
}
}{
"servers": {
"colorblind": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"colorblind-mcp"
]
}
}
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Colorblind — questions
Answers built from our own checks of this server.