Color Conversion Skill

Overview

Color Converter works by analyzing the color provided and converting it to the specified format. It uses advanced algorithms to convert the color to the specified format and returns the color in the new format.

Live Test Color Conversion Skill Skill →

The tool

Once your client is connected to the VerveKit server, this appears in its tool list as ColorConversionSkill. It is read-only and open-world — it fetches and never mutates anything on your side — so most clients call it without asking you to confirm.

Tool call

{
  "name": "ColorConversionSkill",
  "arguments": {
    "hex": "FF0000"
  }
}

You do not name the tool yourself; the model picks it. Asking about FF0000 in the terms this skill covers is enough for it to reach for ColorConversionSkill on its own — naming it explicitly also works, and is the way to force the call.

Connecting

One server URL covers every skill in the catalog, including this one. Authorization is OAuth: the client opens a browser once, and there is no key to paste into a config file.

{
  "mcpServers": {
    "vervekit": {
      "url": "https://api.vervekit.com/v1/mcp"
    }
  }
}

Per-client setup — Claude, Cursor, VS Code, ChatGPT — is on the MCP setup page.

Arguments

These are the properties on the tool's inputSchema, so a well-behaved client validates them before the call is made. Premium arguments are accepted on every plan but only take effect on plans that include them.

Argument	Type	Description
`hex`Required	string	The color in hexadecimal format (e.g., FF0000). Make sure you ommit the #

What the model gets back

The result carries a structuredContent object matching the tool's declared outputSchema, so a client reads fields without parsing prose. status is "ok" and error is null on success; a null field means the value was not available for that input, not that the call failed.

Result

{
  "status": "ok",
  "error": null,
  "data": {
    "hex": "#FF0000",
    "rgb": "255, 0, 0",
    "hsl": "0, 100, 50",
    "cmyk": "0, 100, 100, 0",
    "ansi16": 91,
    "name": "red",
    "channels": {
      "rgbChannels": 3,
      "cmykChannels": 4,
      "ansiChannels": 1,
      "hexChannels": 1,
      "hslChannels": 3
    }
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Field	Type	Example	Description
`hex`Premium	string	`#FF0000`	Color in hexadecimal format with hash prefix included
`rgb`	string	`255, 0, 0`	Color in red green blue comma-separated format
`hsl`Premium	string	`0, 100, 50`	Color in hue saturation lightness comma-separated format
`cmyk`Premium	string	`0, 100, 100, 0`	Color in cyan magenta yellow key comma-separated format
`ansi16`Premium	number	`91`	ANSI 16-color code representation of the color
`name`Premium	string	`red`	Common English name of the color if available
`channels`	object	`{…}`
`channels.rgbChannels`	number	`3`	Number of RGB color channels always three
`channels.cmykChannels`	number	`4`	Number of CMYK color channels always four
`channels.ansiChannels`	number	`1`	Number of ANSI color channels always one
`channels.hexChannels`	number	`1`	Number of hexadecimal color channels always one
`channels.hslChannels`	number	`3`	Number of HSL color channels always three

Failure modes

Errors come back as tool errors carrying a sentence the model can act on, not a bare status code. Error handling covers the full list.

Status	What it means
`400` / `422`	The arguments did not validate. The message names the offending one.
`401`	The OAuth session is invalid or expired — reconnect the server.
`403`	Blocked by a key restriction or an IP allow-list. Never a bad identity.
`404`	This skill is not part of VerveKit. Check the catalog.
`429`	Out of credits, or a brief rate limit. The message tells them apart.

A call costs 2 credits each time the tool actually runs; a model that reasons about the tool without calling it costs nothing.

Use cases

Design System Tokens: Frontend engineers convert designer-provided hex codes into RGB format to populate dynamic CSS variables across multi-theme web applications.
Print Production Prepress: Before sending digital graphics to commercial printers, prepress technicians convert RGB values into four-channel CMYK codes for accurate plate alignment.
Terminal Interface Styling: CLI developers map web color codes directly to ANSI 16-color numbers to colorize script output inside server terminal consoles.
Contrast Ratio Auditing: When evaluating accessibility compliance, automated testing suites convert color names into RGB numbers to calculate exact background and foreground luminance.

Other ways to use Color Conversion Skill

Set up Color Conversion Skill on VerveKit, or reach the same source a different way. Your VerveKit account and credits work on all of them — one key, one balance.

Call it as a REST APIOne HTTPS endpoint and an x-api-key header, with SDKs for Node, Python and .NET.APIVerve →Reference →

Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.VerveSheets →Reference →