mcp_ color_ system_ check_ color_ contrast
1 MCP server offers this tool
What it usually takes
background_hex– in 1 of 1foreground_hex– in 1 of 1
No server marks it as only reading: treat it as able to change data.
From each publisher's own tool list. We never call a tool.
Servers
| Server | Inputs | Read-only? |
|---|---|---|
AI Color System MCP co.huggingface.st939823/mcp-color-system Evaluates the contrast ratio between a foreground and background color against WCAG 2.1 guidelines. | background_hex,foreground_hex | Not stated |