Design

RGB to LCH Converter

Convert RGB color values to LCH for color management with alpha channel support

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/rgb-to-lch-converter' \
  -H 'Content-Type: application/json' \
  -d '{"rgb":"Enter RGB values, one per line:\nrgb(255,0,128)\nrgba(255,0,128,0.5)\n255,0,128\n255,0,128,0.5\nR:255 G:0 B:128\nR:255 G:0 B:128 A:0.5\n#FF0080\n#FF008080\nff0080\nff008080","format":"lch","alphaHandling":"white","customBackground":"#FFFFFF"}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/rgb-to-lch-converter

Parameters

Name	Type	Required	Description
rgb	textarea	Yes	—
format	select	Yes	—
alphaHandling	select	Yes	—
customBackground	color	No	Custom background color for alpha compositing (used when Custom Background is selected)

Response format

Text result

JSON

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-rgb-to-lch-converter": {
      "name": "rgb-to-lch-converter",
      "description": "Convert RGB color values to LCH for color management with alpha channel support",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=rgb-to-lch-converter",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "rgb-to-lch-converter",
    "arguments": {
  "rgb": "Enter RGB values, one per line:\nrgb(255,0,128)\nrgba(255,0,128,0.5)\n255,0,128\n255,0,128,0.5\nR:255 G:0 B:128\nR:255 G:0 B:128 A:0.5\n#FF0080\n#FF008080\nff0080\nff008080",
  "format": "lch",
  "alphaHandling": "white",
  "customBackground": "#FFFFFF"
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

Browse tools Open tool

curl -X POST 'https://api.elysiatools.com/en/api/tools/rgb-to-lch-converter' \ -H 'Content-Type: application/json' \ -d '{"rgb":"Enter RGB values, one per line:\nrgb(255,0,128)\nrgba(255,0,128,0.5)\n255,0,128\n255,0,128,0.5\nR:255 G:0 B:128\nR:255 G:0 B:128 A:0.5\n#FF0080\n#FF008080\nff0080\nff008080","format":"lch","alphaHandling":"white","customBackground":"#FFFFFF"}'

Name

Type

Required

Description

rgb

textarea

Yes

—

format

select

Yes

—

alphaHandling

select

Yes

—

customBackground

color

Custom background color for alpha compositing (used when Custom Background is selected)

{ "mcpServers": { "elysiatools-rgb-to-lch-converter": { "name": "rgb-to-lch-converter", "description": "Convert RGB color values to LCH for color management with alpha channel support", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=rgb-to-lch-converter", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "rgb-to-lch-converter", "arguments": { "rgb": "Enter RGB values, one per line:\nrgb(255,0,128)\nrgba(255,0,128,0.5)\n255,0,128\n255,0,128,0.5\nR:255 G:0 B:128\nR:255 G:0 B:128 A:0.5\n#FF0080\n#FF008080\nff0080\nff008080", "format": "lch", "alphaHandling": "white", "customBackground": "#FFFFFF" } } }