Search / io.github.theluckystrike/contrast-checker
protogridR0· no sign-inWCAG contrast & palettes
v1.0.0 · active · website · descriptor JSON · versions
{
"mcpServers": {
"contrast-checker": {
"type": "http",
"url": "https://contrast-checker.zovo.one/mcp"
}
}
}claude mcp add --transport http contrast-checker https://contrast-checker.zovo.one/mcp[mcp_servers.contrast-checker]
url = "https://contrast-checker.zovo.one/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"contrast-checker": {
"type": "remote",
"url": "https://contrast-checker.zovo.one/mcp",
"enabled": true
}
}
}{
"mcpServers": {
"contrast-checker": {
"type": "http",
"url": "https://contrast-checker.zovo.one/mcp"
}
},
"deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=contrast-checker&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vY29udHJhc3QtY2hlY2tlci56b3ZvLm9uZS9tY3AifQ%3D%3D"
}{
"servers": {
"contrast-checker": {
"type": "http",
"url": "https://contrast-checker.zovo.one/mcp"
}
}
}{
"mcpServers": {
"contrast-checker": {
"httpUrl": "https://contrast-checker.zovo.one/mcp"
}
}
}extensions:
"contrast-checker":
enabled: true
name: "contrast-checker"
type: streamable_http
uri: "https://contrast-checker.zovo.one/mcp"
timeout: 300
protocol.modernprotocol.statelessprotocol.transportprotocol.list_ttlauth.prm, auth.as_metadata, auth.cimdauth.secret_in_urltools.descriptionstools.description_lengthtools.schemastools.annotationstools.directory_hintstools.token_costtools.api_dumptools.hidden_textstability.changesstability.rug_pullstability.new_linksdeps.known_vulns, deps.mcp_sdk_version, deps.resolvableNo tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.
Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.
+website -thin-description +reachable +uptime-100% +updated-23d-ago -no-repository
Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.
| remote | auth | reachable | uptime 30d | p50 | protocol | last ok |
|---|---|---|---|---|---|---|
https://contrast-checker.zovo.one/mcp streamable-http | none | yes | 100% | 262 ms | 2025-11-25 | 2026-11-14 |
check_color_contrastread-only | Use this when the user wants to know whether a text, icon or border colour has enough contrast against a background: a WCAG contrast checker for one colour pair (e.g. "does white text on #F59E0B pass WCAG AA", "contrast ratio of #767676 on white", "what text color for this background"). Returns the computed WCAG 2.x ratio (truncated to 2 decimals, rounded down), AA/AAA results for normal text, large text and UI components, a verdict for a given font size, APCA Lc as draft information, and the nearest passing colours for AA and AAA (darker and lighter, same OKLCH hue and chroma). Accepts hex, 8-digit hex with alpha, rgb(), hsl(), hwb(), lab(), lch(), oklab(), oklch(), color(display-p3 ...) and CSS colour names; wide-gamut colours are clipped to sRGB with a note. Does not read colours from images or web pages, resolve CSS variables or currentColor, or check gradients as a whole (check each stop). For 3 or more colours use check_palette_contrast. |
check_palette_contrastread-only | Use this when the user has a colour palette (2 to 12 colours) and wants to know which combinations are accessible: "check contrast of my color palette", "which of these colors can I use for text", "accessible color palette checker". Returns the full pairwise WCAG 2.x contrast matrix (ratios truncated, rounded down), which pairs pass AA/AAA for text or 3:1 for large text and UI, and a recommended text colour for each background (a palette colour that passes AA, otherwise black or white). Does not generate new colours; use generate_accessible_palette for a tonal scale and check_color_contrast for fixes to one pair. |
generate_accessible_paletteread-only | Use this when the user wants an accessible colour scale or palette built from one colour: "color palette generator from hex", "generate a 50-950 scale from #1E6FD9", "tailwind color palette generator", "accessible color palette for my website". Builds an 11-step 50-950 tonal scale in OKLCH with the base hue, where 50-400 pass AA with black text, 500 passes AA with both white and black text, 600 passes AA with white text and 700-950 pass AAA with white text, and each ratio is reported. Returns CSS custom properties and a Tailwind config as downloads. Does not pick colours by mood or brand meaning and does not extract palettes from images. |
Schemas: list_tools.
And 398 more from this publisher.
{
"name": "io.github.theluckystrike/contrast-checker",
"title": "Zovo Palette Lab",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://contrast-checker.zovo.one/mcp",
"type": "streamable-http"
}
],
"version": "1.0.0",
"websiteUrl": "https://contrast-checker.zovo.one/",
"description": "WCAG contrast & palettes"
}