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Wcag Audit Perceivable Color Contrast

Checked
jkense·vlatest·frontend·MIT

Analyzes webpage color contrast ratios against WCAG guidelines to identify accessibility issues for users with visual impairments.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add jkense/agent-skills-wcag --skill wcag-audit-perceivable-color-contrast -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

jkense

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned jkense/agent-skills-wcag at 7fc6eec6ad.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
7fc6eec6ad
Manifest
skills/wcag-audit-perceivable-color-contrast/SKILL.md
Scanned
2 files, 267 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill assesses the color contrast ratios between text and background colors on a webpage, ensuring compliance with Web Content Accessibility Guidelines (WCAG). It specifically focuses on the "Perceivable" success criteria related to color contrast. The tool helps identify areas where insufficient contrast may hinder readability for users with visual impairments.

When to use it

  • Website Audits: Evaluate existing websites or web applications for WCAG compliance during development or maintenance.
  • Design Reviews: Check the color choices in design mockups before implementation to proactively address accessibility issues.
  • Content Creation: Verify sufficient contrast when creating new content, such as infographics or presentations intended for online distribution.
  • User Feedback: Investigate potential readability problems reported by users with visual impairments.

Key capabilities

  • Calculates color contrast ratios based on WCAG standards.
  • Evaluates text and background color combinations.
  • Focuses on the "Perceivable" success criteria.

Example prompts

  • “Check the color contrast between the white text and dark blue background on this webpage: [URL]”
  • “What is the WCAG color contrast ratio for the heading text and its background?”
  • “Is this color combination accessible according to WCAG guidelines? Text color: #FFFFFF, Background Color: #000080"

Tips & gotchas

  • The skill requires a URL or specific color codes (hexadecimal values) as input. Ensure the provided information is accurate for reliable results.