MCP server

Zovo Palette Lab

io.github.theluckystrike/contrast-checker

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

WCAG contrast & palettes

Working at last checkAbout 1,361 tokens per request once connected3 tools

Website

https://contrast-checker.zovo.one/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 3
Token cost: About 1,361 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http contrast-checker https://contrast-checker.zovo.one/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.contrast-checker]
url = "https://contrast-checker.zovo.one/mcp"

Gemini CLI

{"mcpServers":{"contrast-checker":{"httpUrl":"https://contrast-checker.zovo.one/mcp"}}}

Cursor

{"mcpServers":{"contrast-checker":{"url":"https://contrast-checker.zovo.one/mcp"}}}

VS Code

{"servers":{"contrast-checker":{"type":"http","url":"https://contrast-checker.zovo.one/mcp"}}}

Antigravity

agy mcp add contrast-checker https://contrast-checker.zovo.one/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"contrast-checker","server_url":"https://contrast-checker.zovo.one/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"contrast-checker","server_url":"https://contrast-checker.zovo.one/mcp"}

Tools

check_color_contrast ~633 tokens
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
check_palette_contrast ~389 tokens
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 truncate
generate_accessible_palette ~339 tokens
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

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