# color-space (MCP server)

> color-space is an MCP server that adds tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Conversions across 221 color spaces, tested against cited sources: CSS strings, gamut, LUTs. It has 390 GitHub stars, is released under the CC0-1.0 license and runs locally with npx -y color-space.

Open collection of color spaces. * Formulas tested against cited sources * Conventional ranges * JS with TypeScript types / WASM / GLSL / LUT / ICC / OCIO

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/colorjs/color-space |
| GitHub stars | 390 |
| License | CC0-1.0 |
| Language | JavaScript |
| Transport | stdio |
| Packages | npm: color-space |
| Remote URL | none |
| Needs API key | no |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Other |
| Latest release | v3.5.0 (Oct 20, 2026) |
| Last commit | Oct 25, 2026 |
| MCP registry name | io.github.colorjs/color-space |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "color-space": {
      "command": "npx",
      "args": [
        "-y",
        "color-space"
      ]
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --transport stdio color-space -- npx -y color-space
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "color-space": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "color-space"
      ]
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "color-space": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "color-space"
      ]
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

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