happytails.ai

Color Blindness Simulator

Open Color Blindness Simulator on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.

Tool capabilities

{
  "id": "color-blindness-simulator",
  "category": "accessibility-tools",
  "built": true,
  "requirements": "Named simulation model, preview modes and clear limits of simulation.",
  "implementation": {
    "fields": [
      {
        "key": "mode",
        "label": "Simulation",
        "value": "Protanopia",
        "type": "select",
        "values": [
          "Protanopia",
          "Deuteranopia",
          "Tritanopia"
        ]
      }
    ],
    "files": true,
    "input": false,
    "note": "Approximate color-matrix simulation for design review, not a clinical representation or diagnostic test.",
    "experience": {
      "automatic": false,
      "single": false,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Your text",
      "placeholder": "Type or paste your input…",
      "help": "Up to 1,000,000 characters. Review the settings before running.",
      "helpParts": [
        "Up to 1,000,000 characters.",
        "Review the settings before running."
      ],
      "action": null
    },
    "mode": "explicit",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

Page guide

Preview how colors may appear with different types of color blindness.

How to use Color blindness simulator
  1. Choose a file in a supported format.
  2. Review the settings, then choose Run Color blindness simulator.
  3. Review the result, then use Copy result or a download link when available.

Working with color blindness simulator

Accessibility utilities can calculate contrast, inspect markup and help draft descriptions. They answer specific questions, but a usable experience also depends on navigation, context and the way content is presented to people using different technologies.

Common questions

Does every image need a long description?

No. The useful description depends on the image’s purpose and nearby text. A decorative image and a chart conveying important information need different treatment.

Can an automated pass certify the whole experience?

No. Automated checks cover only part of the problem. Use them to find issues, then review interactions and content with the intended users in mind.