A11y MCP Server

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check_color_contrast

Evaluate foreground and background color combinations for compliance with WCAG contrast standards. Input color values in various formats, font size, and boldness to ensure accessibility.

Instructions

Check if a foreground and background color combination meets WCAG contrast requirements

Input Schema

Name	Required	Description
`background`	Yes	Background color in various formats (e.g., "#FFFFFF", "#FFF", "rgb(255,255,255)", "hsv(0,0%,100%)")
`fontSize`	No	Font size in pixels
`foreground`	Yes	Foreground color in various formats (e.g., "#000000", "#000", "rgb(0,0,0)", "hsv(0,0%,0%)")
`isBold`	No	Whether the text is bold

Input Schema (JSON Schema)

{
  "properties": {
    "background": {
      "description": "Background color in various formats (e.g., \"#FFFFFF\", \"#FFF\", \"rgb(255,255,255)\", \"hsv(0,0%,100%)\")",
      "type": "string"
    },
    "fontSize": {
      "default": 16,
      "description": "Font size in pixels",
      "type": "number"
    },
    "foreground": {
      "description": "Foreground color in various formats (e.g., \"#000000\", \"#000\", \"rgb(0,0,0)\", \"hsv(0,0%,0%)\")",
      "type": "string"
    },
    "isBold": {
      "default": false,
      "description": "Whether the text is bold",
      "type": "boolean"
    }
  },
  "required": [
    "foreground",
    "background"
  ],
  "type": "object"
}

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