MCP server

Rnv Color

io.github.RNVizion/rnv-color-mcp

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

A complete color workflow over MCP: mix, convert, harmonize, measure, place, and remember palettes.

Working at last checkAbout 3,023 tokens per request once connected10 tools

Source

https://rnvizion-rnv-color-mcp.hf.space/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 10
Token cost: About 3,023 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http rnv-color-mcp https://rnvizion-rnv-color-mcp.hf.space/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.rnv-color-mcp]
url = "https://rnvizion-rnv-color-mcp.hf.space/mcp"

Gemini CLI

{"mcpServers":{"rnv-color-mcp":{"httpUrl":"https://rnvizion-rnv-color-mcp.hf.space/mcp"}}}

Cursor

{"mcpServers":{"rnv-color-mcp":{"url":"https://rnvizion-rnv-color-mcp.hf.space/mcp"}}}

VS Code

{"servers":{"rnv-color-mcp":{"type":"http","url":"https://rnvizion-rnv-color-mcp.hf.space/mcp"}}}

Antigravity

agy mcp add rnv-color-mcp https://rnvizion-rnv-color-mcp.hf.space/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"rnv-color-mcp","server_url":"https://rnvizion-rnv-color-mcp.hf.space/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"rnv-color-mcp","server_url":"https://rnvizion-rnv-color-mcp.hf.space/mcp"}

Tools

color_difference ~234 tokens
Perceptual difference (Delta-E) between two colors. color1 and color2 accept a hex, CSS name, RNV brand name, or saved-palette reference. method is 'ciede2000' (default, modern standard) or 'cie76'. A value near 1.0 is the threshold the eye can just notice; larger means more different. Returns the v
contrast_check ~200 tokens
WCAG contrast ratio between a foreground and background color, for accessibility. Both accept a hex, CSS name, RNV brand name, or saved-palette reference. Returns the ratio (1.0-21.0) plus pass/fail for AA and AAA at normal and large text sizes and for UI components. Read-only and deterministic, wit
convert_color ~207 tokens
Convert a color between formats. Input accepts a hex, CSS name, RNV brand name, or saved-palette reference. With `to` set to one of hex/rgb/hsv/hsl/lab, returns just that format; leave `to` out to get all of them. hsv and hsl are fractions from 0 to 1, hue included (multiply hue by 360 for degrees).
generate_harmony ~228 tokens
Generate a color harmony from a base color. base accepts a hex, CSS name, RNV brand name, or saved-palette reference (e.g. 'Spring line:2'). scheme is one of: complementary, analogous, triadic, split-complementary, tetradic (a.k.a. square), monochromatic, compound. Returns a list of hex colors. Read
get_palette ~130 tokens
Retrieve one saved palette by name, returning its colors and metadata. Returns null if no palette by that name exists. Read-only; no side effects. Use when you already know the palette name; to list available names first use list_palettes, and to create or update a palette use save_palette.
list_palettes ~107 tokens
List every saved palette as name + colors. Read-only; no side effects. Use to discover what palettes exist or to find a name before calling get_palette; to fetch one palette's full detail use get_palette, and to create or overwrite one use save_palette.
mix_colors ~629 tokens
Blend up to 12 colors into one. Each color may be a hex (#d2bc93), a CSS name (red), an RNV brand name (brand gold, near-black), or a saved-palette reference (Spring line, or 'Spring line:2' for its 2nd swatch). Optional integer weights bias the blend (defaults to equal). mode selects the model: rgb
place_lightness ~390 tokens
Hold a color's hue and chroma and set its lightness, returning one result per requested L*. color accepts a hex, CSS name, RNV brand name, or saved-palette reference; lightness is a list of L* values in 0-100. This is the operation behind a LIGHT/DARK PAIR: one hue at two lightnesses, with a and b h
save_palette ~712 tokens
Persist a named color palette for later retrieval with get_palette or list_palettes. Each entry in colors accepts what every other tool accepts: a hex (#d2bc93), a CSS name (red), an RNV brand name (brand gold), or a saved-palette reference ('Spring line:2'); each is resolved and stored as normalize
transform_text ~186 tokens
Apply an exact, deterministic text transformation. operation is one of: UPPERCASE, lowercase, 'Title Case', 'Sentence case', camelCase, PascalCase, snake_case, CONSTANT_CASE, kebab-case, dot.case, 'iNVERTED cASE'. Read-only and deterministic: it returns the transformed string and changes nothing, sa

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