Colour convert
Live#hex to RGB and HSL, or the other way.
Accepts #hex or rgb(). For WCAG contrast, use Colour contrast.
Server URL
https://toolcargo.com/mcp/color-convertClaude Code
claude mcp add --transport http --scope user toolcargo-color-convert https://toolcargo.com/mcp/color-convert \
--header "Authorization: Bearer YOUR_API_KEY"Create a key in your dashboard. Other clients: setup guides.
What it helps you do
- hex, rgb, hsl
Built for: Designers matching brand colours across CSS and ads.
Example requests
Brand red
“Convert colour #b8321a with ToolCargo.”
hex + rgb + hsl.
Step-by-step workflows: pre-launch check · fixing link previews
Tools
| Tool | What it does | Access |
|---|---|---|
convert_colorConvert a colour | #hex or rgb() to hex, RGB and HSL. For contrast, use Colour contrast. | Read-only |
Requirements
- • A ToolCargo account with Site Audit activated (free).
Limitations
- • sRGB only. No CMYK, no P3.
Supported clients
“Tested” means we connected that client to this endpoint and ran a tool call ourselves. “Documented” means the client supports this setup per its own docs, but we have not tested it yet.
| Claude Code | API key header | Tested | Remote HTTP server with an Authorization header. Tested 2026-09-11 (v2.1.268). |
| Claude (claude.ai) | OAuth sign-in | Tested | Custom connector with OAuth sign-in; tested on claude.ai web 2026-09-11. Desktop and mobile use the same account connectors but were not tested separately. |
| Cursor | API key header | Documented, not yet tested | mcp.json with url and headers. |
| VS Code (Copilot agent mode) | API key header | Documented, not yet tested | .vscode/mcp.json with type http and headers. |
| ChatGPT (developer mode) | OAuth sign-in | Documented, not yet tested | Requires OAuth; API keys cannot be entered. |
| MCP Inspector | API key header | Tested | CLI mode, tested 2026-09-11. Useful for calling tools directly. |
More in Design & creative
Pricing
Free
$0For trying the connector on your own sites.
50 calls/month · 25 links per check
Pro
$12/moFor freelancers and agencies auditing client sites every week.
2,000 calls/month · 100 links per check
Proposed test price. See the pricing page for checkout status.