color-contrast-auditor

color-contrast-auditor is a plugin for Claude Code from curiositech/some_claude_skills. Its manifest loads nothing; the 1 skill it bundles cost 116 tokens per session together, scanned A, original, MIT.

An accessibility checker for text and background colors, using WCAG 2.1 rules and checks that account for different types of color vision.

In plain words
What is it for?
Use it to check contrast ratios, simulate color-vision differences, and audit or fix color accessibility in an interface.
Why use it?
It finds text that is difficult to read or inaccessible because the color contrast is too low, then points to more suitable alternatives.

Plugin for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to check contrast ratios, simulate color-vision differences, and audit or fix color accessibility in an interface.

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Install in Claude Code
/plugin marketplace add curiositech/some_claude_skills/plugin install color-contrast-auditor
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/curiositech/some_claude_skills

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for color-contrast-auditor

README.md
[![agentmods](https://agentmods.dev/badge/plugins/curiositech/some_claude_skills/color-contrast-auditor/github.svg)](https://agentmods.dev/plugins/curiositech/some_claude_skills/color-contrast-auditor)
Your own site
<a href="https://agentmods.dev/plugins/curiositech/some_claude_skills/color-contrast-auditor"><img src="https://agentmods.dev/badge/plugins/curiositech/some_claude_skills/color-contrast-auditor/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for color-contrast-auditor

Your own site · 80×15
<a href="https://agentmods.dev/plugins/curiositech/some_claude_skills/color-contrast-auditor"><img src="https://agentmods.dev/badge/plugins/curiositech/some_claude_skills/color-contrast-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill cost 116 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

color-contrast-auditor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/color-contrast-auditor/.claude-plugin/plugin.json · 5 lines

What it actually says

{
  "name": "color-contrast-auditor",
  "description": "Detects and fixes color contrast violations using WCAG 2.1 guidelines and perceptual analysis. Expert in contrast ratio calculation, color blindness simulation, and providing accessible alternatives. Activate on \"check contrast\", \"color accessibility\", \"WCAG audit\", \"readability check\", \"contrast ratio\", \"hard to read\", \"can't see text\". NOT for general color theory (use color-theory-palette-harmony-expert), brand color selection (use web-design-expert), or non-visual accessibility (use ux-friction-analyzer)."
}
Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 116 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 5 lines scan A ab350ab31257

Subscribe to this mod's changes

color-contrast-auditor is a plugin published in the GitHub repository curiositech/some_claude_skills (216 stars, last pushed 3d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-06.