Chart Color System
Solve, audit and simulate colorblind-safe chart palettes. WCAG contrast, OKLab ΔE. Read-only.
Sollte ich dies verwenden
Qualität und Sicherheit
Basierend auf einer automatisierten Analyse der Tool-Definitionen und der Einhaltung des Protokolls.
Kontextkosten
Dies ist die ungefähre Anzahl der Tokens, die jedes Mal verbraucht werden, wenn die Tools des Servers in den Kontext eines Modells geladen werden. Höhere Werte verringern die Aufmerksamkeit, die für andere Aufgaben verfügbar ist.
Installieren
Installation mit einem Klick
Fügen Sie dies Ihrer Datei `claude_desktop_config.json` hinzu:
{
"mcpServers": {
"chart-color-system": {
"url": "https://chart-color-mcp.vercel.app/mcp"
}
}
}Remote-Endpunkte
https://chart-color-mcp.vercel.app/mcpstreamable-httpWas es kann
Tool-Inventar
Tools (4)
🟢solve_palette(n, anchors, background, grid, posture)
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 against the background, and a link to open it in the app. Honest cap is 6 slots; above that the result says so.
Eingabe-Schema
{
"type": "object",
"properties": {
"n": {
"type": "integer",
"minimum": 1,
"maximum": 12,
"default": 6,
"description": "Number of categorical slots"
},
"anchors": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 12,
"default": [],
"description": "Brand or required colors, kept exactly, in slot order (CSS syntax)"
},
"background": {
"type": "string",
"default": "#ffffff",
"description": "Chart background color"
},
"grid": {
"type": "string",
"description": "Gridline color; defaults to a light or dark gray to match the background"
},
"posture": {
"type": "string",
"enum": [
"kpi",
"comparative",
"exploratory"
],
"default": "comparative",
"description": "kpi: few strong colors; comparative: balanced; exploratory: many muted"
}
},
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢audit_palette(colors, background, ramp)
Audit existing chart colors for accessibility: pairwise OKLab separation under normal vision, deuteranopia, protanopia, tritanopia and achromatopsia, plus WCAG 2.2 non-text contrast (3:1) of every color against the chart background. Returns a pass / warn / fail verdict with the numbers behind it. Set ramp=true for sequential or diverging scales, whose steps are meant to be close.
Eingabe-Schema
{
"type": "object",
"properties": {
"colors": {
"type": "array",
"items": {
"type": "string"
},
"minItems": 1,
"maxItems": 24,
"description": "Palette colors in slot order (CSS syntax)"
},
"background": {
"type": "string",
"default": "#ffffff",
"description": "Chart background color"
},
"ramp": {
"type": "boolean",
"default": false,
"description": "true for a sequential or diverging scale (skips pairwise separation)"
}
},
"required": [
"colors"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢simulate_palette(colors, modes)
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.
Eingabe-Schema
{
"type": "object",
"properties": {
"colors": {
"type": "array",
"items": {
"type": "string"
},
"minItems": 1,
"maxItems": 24,
"description": "Colors in slot order (CSS syntax)"
},
"modes": {
"type": "array",
"items": {
"type": "string",
"enum": [
"normal",
"deutan",
"protan",
"tritan",
"achromatopsia"
]
},
"description": "Vision modes to simulate; default all"
}
},
"required": [
"colors"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢build_ramp(kind, start, end, mid, steps, ...)
Build an evenly spaced perceptual (OKLab) color scale: sequential from start to end, or diverging from start through mid to end. Returns the steps and a background-contrast audit (pairwise separation is not judged for ramps).
Eingabe-Schema
{
"type": "object",
"properties": {
"kind": {
"type": "string",
"enum": [
"sequential",
"diverging"
]
},
"start": {
"type": "string",
"description": "First color (or the negative end of a diverging scale)"
},
"end": {
"type": "string",
"description": "Last color (or the positive end)"
},
"mid": {
"type": "string",
"description": "Middle color for a diverging scale; default a neutral near the background"
},
"steps": {
"type": "integer",
"minimum": 3,
"maximum": 24,
"default": 7
},
"background": {
"type": "string",
"default": "#ffffff"
}
},
"required": [
"kind",
"start",
"end"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}Community
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