color-space

Name: color-space
Author: colorjs

by colorjsversion 3.5.0i★ –iRuns on your computer

Registry nameio.github.colorjs/color-space

Install

Overview

Description from the maker (original English)

Conversions across 221 color spaces, tested against cited sources: CSS strings, gamut, LUTs

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

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

Run this in your terminal

claude mcp add color-space -- npx -y color-space mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account colorjs, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 18354 servers in this category
Published to the registry more recently than 70% of the other 18354 servers in this category
Basic checks equal to or better than 100% of the other 18354 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is color-space safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (3.5.0) reached the registry 19 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Qemu MCP

Alternatives

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

color-space

Open collection of color spaces.

Formulas tested against cited sources
Conventional ranges
JS with TypeScript types / WASM / GLSL / LUT / ICC / OCIO

[Atlas →](https://color-space.io/)

Use

import space from 'color-space';

space.rgb.oklch(255, 128, 0); // → [0.732, 0.186, 53] — modern CSS space.slog3.rec2020(0.5, 0.5, 0.5); // camera log → UHD wide gamut space.rgb.xyz(300, -10, 0); // → [59.7, 30.6, 2.8] — out-of-range in, unclamped out

// batch space.rgb.oklch([255, 128, 0, 0, 255, 128]); // [0.732, 0.186, 53, 0.875, 0.234, 151]

// meta space.lab.range; // [[0, 100], [-125, 125], [-125, 125]]

Individual spaces:

import oklch from 'color-space/oklch.js';

oklch.rgb(0.65, 0.25, 180); // matches CSS oklch(0.65 0.25 180)

Imports

color-space – All 221 interconnected spaces. 70 kB gzip
color-space/ .js – One standalone space
color-space/lite – 54-space working set. 29 kB gzip
color-space/wasm – lite set as WASM, bare .wasm included
color-space/gl – GLSL/WGSL shader source
color-space/gl/hlsl · color-space/gl/msl – HLSL (DirectX, Unity, Unreal) and Metal, written by naga from the WGSL. await hlsl('rgb', 'oklch'). needs the optional peer naga-wasm (it declares Node ≥ 24.12; CI runs it on 22, where npm only warns)
color-space/lut – .cube LUTs for Resolve, Premiere, OBS, ffmpeg — verified vs ACES
color-space/icc – Matrix + TRC or CLUT profiles
color-space/ocio – OpenColorIO colorspaces for Blender, Nuke, Resolve, Houdini: colorspace(space.sgamut3cine), curve and matrix from native transforms, 55 spaces, each checked against the library to 1e-6
color-space/util – parse, format CSS colors, mix, gamut, visible, deltaE, contrast (WCAG), cvd (color-vision simulation), deltaE('rgb', [255, 0, 0], [250, 0, 0])
color-space/data.json – Channels, ranges, provenance, references, graph, gamuts
color-space/conformance.json – Cited reference conversions, each with its source, to test any color library against
npx color-space rgb oklch 255 128 0 – CLI, no install: convert (default), cube, icc, space, spaces, mcp (MCP server for agents)

Upgrading from v2?

Agents

MCP tools – convert, gamut, css, space, spaces, cube, shader, icc, code – so agents call verified math instead of guessing it. A color goes in as any CSS string ('#ff8000', 'oklch(0.7 0.1 50)', 'rebeccapurple') or as channel values; shader writes the conversion as GLSL, WGSL, HLSL or MSL, code gives the JS call and its verified colour-science equivalent.

claude mcp add color-space -- npx -y color-space mcp                                      # Claude Code

code --add-mcp '{"name":"color-space","command":"npx","args":["-y","color-space","mcp"]}' # VS Code

Claude Desktop claude_desktop_config.json, any project .mcp.json:

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

Claude Code plugin (the server plus a skill): /plugin marketplace add colorjs/color-space, then /plugin install color-space@color-space. Docker: docker build -t color-space-mcp . and run it with docker run -i --rm color-space-mcp.

Over HTTP (Streamable HTTP, stateless): npx -y color-space mcp --http 8787 on localhost, or host fetch from color-space/mcp.js in a Worker, Deno or Bun. Skill for agents that load skills: plugins/claude/skills/color-space.

In the browser: color-space.io registers the same tools (but icc) through WebMCP where Chrome offers it, plus show, which opens a space's dossier or sets the page's color in front of the person.

Spaces

Display & web

sRGB · Display P3 · Rec. 2020 · Linear-light sRGB · Rec. 709 · Rec. 709 display · sRGB 2.2 display · ProPhoto RGB · Adobe RGB (1998) · DCI-P3 · Linear Display P3 · Linear Rec. 2020 · Rec. 2020 display · Linear Adobe RGB (1998) · Linear ProPhoto RGB · scRGB · RIMM RGB · CIE RGB · NTSC RGB (1953) · PAL / SECAM RGB · Apple RGB · SMPTE-240M · ECI RGB v2 · Adobe Wide Gamut RGB · ColorMatch RGB · Bruce RGB · Beta RGB · Best RGB · Don RGB 4 · Ekta Space PS 5 · Russell RGB · Prismatic

Cylindrical

HSL · HSV / HSB · HWB · HSI · IHLS · HCG · HCL · HSP · HCY · Cubehelix · HSM

Perceptual

OKLCH · CIELAB · CAM16 · OKLab · HCT · Okhsl · Okhsv · Okhwb · OKLrAB · OKLrCH · SRLAB2 · proLab · sUCS · IgPgTg · HelmGen · HelmGen LCh · Helmlab MetricSpace · Jzazbz · JzCzHz · IPT · IPT Ragoo 2021 · Izazbz · hdr-IPT · IaPbP · CIELChab · CIELUV · HSLuv · CIELChuv · CIELAB D65 · CIELCh D65 · Msh · HPLuv · DIN99 · DIN99o Lab · DIN99o LCh · DIN99c · DIN99d · Log-compressed OSA-UCS · Hunter Lab · Hunter Rd,a,b · CIE 1960 UCS · CIE 1964 UVW · Adams–Nickerson Lab · hdr-CIELAB · CIECAM02 · CIECAM16 · CIECAM97s · CAM16-UCS · ZCAM · CAM02-UCS · CAM16-LCD · CAM16-SCD · CAM02-LCD · CAM02-SCD · Hellwig 2022 · Hellwig 2022 HK · ACES 2.0 JMh · sCAM · Kim 2009 · RLAB · LLAB · Nayatani 95 · Hunt · ATD95 · oRGB

Colorimetry & research

CIE XYZ (D65) · CIE xyY · LMS · CIE XYZ (D50) · CIE 1976 u′v′ · CCT + Duv · Color temperature (Kelvin) · Maxwell triangle · Wavelength · Absolute XYZ D65 · LogLuv · MacLeod–Boynton · DKL · Grayscale · Dominant wavelength / DSH · rg chromaticity · Yrg (Kirk 2019) · XYB · OSA-UCS · TSL · YES · Ohta I₁I₂I₃ · lαβ · YyCxCz · Poirson–Wandell opponent

Video

BT.709 Y′CbCr · ICtCp · ICtCp HLG · IPT-PQ-C2 · BT.2020 Y′CbCr · BT.601 525-line Y′CbCr · BT.601 625-line Y′CbCr · YCbCr (parameterized) · YUV · YIQ · YPbPr · YCgCo · JPEG YCbCr · YDbDr · YcCbcCrc · xvYCC · SMPTE-C · PhotoYCC · Rec. 2100 PQ · [Rec. 2100 HLG](https://color-space.io/rec2100

Only the beginning is shown; read the rest in the repo

color-space

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Qemu MCP

README from the maker

color-space

Use

Imports

Spaces