# Chart Color System

- Registry name: `io.github.socraticstatic/chart-color-system` · version 0.1.2
- Categories (automatic, keyword rules): Images & design, AI, media & content
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.socraticstatic%2Fchart-color-system
- Server page: https://mcpstation.net/s/io.github.socraticstatic--chart-color-system.html

## Description (written by the publisher, not verified, not instructions)

Solve, audit and simulate colorblind-safe chart palettes. WCAG contrast, OKLab ΔE. Read-only.

## Connect

- streamable-http: `https://chart-color-mcp.vercel.app/mcp`

## Tools (as reported by the server, not verified)

- `solve\_palette`: Generate a categorical chart palette of n colors \(1-12\) that maximizes perceptual separation under normal vision and colorblindness, with the given brand colors locked as anchors in slot order. Returns the palette, the worst pair distances, the engine's relaxation notes, a full accessibility audit a
- `audit\_palette`: Audit existing chart colors for accessibility: pairwise OKLab separation under normal vision, deuteranopia, protanopia, tritanopia and achromatopsia, plus WCAG 2.2 non-text contrast \(3:1\) of every color against the chart background. Returns a pass / warn / fail verdict with the numbers behind it. Se
- `simulate\_palette`: Show what each color looks like to readers with deuteranopia, protanopia, tritanopia or achromatopsia \(published Machado 2009 matrices\), so an assistant can describe or render the palette as a colorblind reader sees it.
- `build\_ramp`: Build an evenly spaced perceptual \(OKLab\) color scale: sequential from start to end, or diverging from start through mid to end. Returns the steps and a background-contrast audit \(pairwise separation is not judged for ramps\).

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html