Web Interface Guidelines Reviewer
vercel-labs/openreview
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my…
WCAG accessibility analysis for color palettes including contrast ratios, compliance checking, and remediation suggestions.
Install Color Accessibility
$ npx skills add jmagly/aiwg --skill color-accessibility -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jmagly/aiwg color-accessibility --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/jmagly/aiwg.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agentic/code/plugins/color-palette/skills/color-accessibility .claude/skills/color-accessibility && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "color-accessibility" agent skill from https://github.com/jmagly/aiwg/tree/main/agentic/code/plugins/color-palette/skills/color-accessibility into .claude/skills/color-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "color-accessibility", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/jmagly/aiwg/tree/main/agentic/code/plugins/color-palette/skills/color-accessibilityType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add jmagly/aiwg --skill color-accessibility -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jmagly/aiwg color-accessibility --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jmagly/aiwg.git skills-src && mkdir -p .agents/skills && cp -r skills-src/agentic/code/plugins/color-palette/skills/color-accessibility .agents/skills/color-accessibility && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "color-accessibility" agent skill from https://github.com/jmagly/aiwg/tree/main/agentic/code/plugins/color-palette/skills/color-accessibility into .agents/skills/color-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "color-accessibility", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jmagly/aiwg --skill color-accessibility -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jmagly/aiwg color-accessibility --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jmagly/aiwg.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/agentic/code/plugins/color-palette/skills/color-accessibility .cursor/skills/color-accessibility && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "color-accessibility" agent skill from https://github.com/jmagly/aiwg/tree/main/agentic/code/plugins/color-palette/skills/color-accessibility into .cursor/skills/color-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "color-accessibility", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/jmagly/aiwg.git --path agentic/code/plugins/color-palette/skills/color-accessibility--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add jmagly/aiwg --skill color-accessibility -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jmagly/aiwg color-accessibility --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jmagly/aiwg.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/agentic/code/plugins/color-palette/skills/color-accessibility .gemini/skills/color-accessibility && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "color-accessibility" agent skill from https://github.com/jmagly/aiwg/tree/main/agentic/code/plugins/color-palette/skills/color-accessibility into .gemini/skills/color-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "color-accessibility", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install jmagly/aiwg color-accessibilityInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add jmagly/aiwg --skill color-accessibility -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jmagly/aiwg.git skills-src && mkdir -p .github/skills && cp -r skills-src/agentic/code/plugins/color-palette/skills/color-accessibility .github/skills/color-accessibility && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "color-accessibility" agent skill from https://github.com/jmagly/aiwg/tree/main/agentic/code/plugins/color-palette/skills/color-accessibility into .github/skills/color-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "color-accessibility", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jmagly/aiwg --skill color-accessibility -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install jmagly/aiwg color-accessibility --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jmagly/aiwg.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/agentic/code/plugins/color-palette/skills/color-accessibility .opencode/skills/color-accessibility && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "color-accessibility" agent skill from https://github.com/jmagly/aiwg/tree/main/agentic/code/plugins/color-palette/skills/color-accessibility into .opencode/skills/color-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "color-accessibility", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
color-accessibility- GitHub stars
- 220
- Token cost
- ~1.6k tokens
- SKILL.md length
- 460 words
- Files
- 1
- Skills in repo
- 12
- Repo updated
- First seen
- Licence
- MIT
At a glance
WCAG accessibility analysis for color palettes including contrast ratios, compliance checking, and remediation suggestions.
- Works in 7 steps: Parse Colors → Calculate Relative Luminance → Calculate Contrast Ratios → …
- User needs to verify colors meet accessibility standards
- SKILL.md covers Purpose, When This Skill Applies, Trigger Phrases and Parameters, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Color Accessibility is an agent skill from jmagly/aiwg. WCAG accessibility analysis for color palettes including contrast ratios, compliance checking, and remediation suggestions. Use when user needs to verify colors meet accessibility standards.
Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Frontend & Design, covering Accessibility. The repository describes itself as: Cognitive architecture for AI-augmented software development. Specialized agents, structured workflows, and multi-platform deployment. Claude Code · Codex · Copilot · Cursor ·… The licence is MIT.
When your agent uses it
- User needs to verify colors meet accessibility standards
- Tasks that involve Accessibility
Example prompts
- “/color-accessibility”
Workflow steps
7 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit dda238f. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Color Accessibility loads about 1.6k tokens when it runs. Until then it costs about 53 tokens; SKILL.md has 460 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from jmagly/aiwg at commit dda238f, republished under its MIT licence (© jmagly). 460 words, ~1,550 tokens.
Download SKILL.mdSave it as
.claude/skills/color-accessibility/SKILL.md (or your agent's skills folder).- name
- color-accessibility
- description
- WCAG accessibility analysis for color palettes including contrast ratios, compliance checking, and remediation suggestions. Use when user needs to verify colors meet accessibility standards.
- namespace
- aiwg
- platforms
- all
- version
- 1.0.0
Color Accessibility Skill
Purpose
Analyze color palettes for WCAG 2.1 accessibility compliance. Calculate contrast ratios for all color pairs, identify failing combinations, and suggest fixes to meet AA or AAA standards.
When This Skill Applies
- User asks "are these colors accessible?"
- User wants to "check contrast ratios"
- User needs "WCAG compliance" for a palette
- User asks about "color accessibility"
- User wants to ensure colors work for colorblind users
- User mentions "AA" or "AAA" standards
Trigger Phrases
| Natural Language | Action |
|---|---|
| "Check if these colors are accessible" | Full WCAG analysis |
| "What's the contrast ratio?" | Calculate specific pair ratio |
| "Make this palette AA compliant" | Analyze + suggest fixes |
| "Is this readable?" | Text contrast check |
| "Color blind friendly?" | Color vision deficiency check |
| "Fix the accessibility of this palette" | Remediation suggestions |
Parameters
--palette <colors>— Comma-separated color values to analyze--foreground <color>— Specific foreground color (for pair check)--background <color>— Specific background color (for pair check)--standard <level>— Target standard: A, AA (default), AAA--fix— Include remediation suggestions for failing pairs--matrix— Show full contrast matrix for all pairs
Analysis Process
1. Parse Colors
Accept colors in any format and normalize to HEX + RGB + HSL:
- HEX:
#1a1a2e,#fff - RGB:
rgb(26, 26, 46) - HSL:
hsl(240, 28%, 14%) - Named:
navy,coral,forestgreen
2. Calculate Relative Luminance
For each color, calculate relative luminance per WCAG 2.1:
For each channel (R, G, B):
sRGB = channel / 255
linear = sRGB <= 0.04045
? sRGB / 12.92
: ((sRGB + 0.055) / 1.055) ^ 2.4
L = 0.2126 * R_linear + 0.7152 * G_linear + 0.0722 * B_linear3. Calculate Contrast Ratios
For every foreground/background pair:
ratio = (max(L1, L2) + 0.05) / (min(L1, L2) + 0.05)4. Evaluate Against Standards
| Standard | Normal Text (< 18pt) | Large Text (>= 18pt or 14pt bold) | UI Components |
|---|---|---|---|
| A | No minimum | No minimum | No minimum |
| AA | 4.5:1 | 3:1 | 3:1 |
| AAA | 7:1 | 4.5:1 | 4.5:1 |
5. Generate Contrast Matrix
For N colors, generate an N x N matrix:
Contrast Matrix (AA Standard)
#1a1a2e #16213e #0f3460 #e94560 #ffffff
#1a1a2e — 1.2:1 1.8:1 5.4:1 14.2:1
FAIL FAIL PASS PASS
#16213e 1.2:1 — 1.5:1 4.5:1 11.8:1
FAIL FAIL PASS PASS
#0f3460 1.8:1 1.5:1 — 3.0:1 7.9:1
FAIL FAIL FAIL PASS
#e94560 5.4:1 4.5:1 3.0:1 — 2.6:1
PASS PASS FAIL FAIL
#ffffff 14.2:1 11.8:1 7.9:1 2.6:1 —
PASS PASS PASS FAILShow full SKILL.md (192 more words)Show less
6. Color Vision Deficiency Check
Simulate how the palette appears under common color vision deficiencies:
| Type | Prevalence | Affected Colors |
|---|---|---|
| Protanopia (no red) | ~1% males | Red-green confusion |
| Deuteranopia (no green) | ~1% males | Red-green confusion |
| Tritanopia (no blue) | ~0.003% | Blue-yellow confusion |
| Achromatopsia (no color) | ~0.003% | All hues lost |
Check that colors remain distinguishable under each simulation. Flag pairs that become indistinguishable.
7. Remediation Suggestions
When --fix is specified, for each failing pair suggest adjustments:
- Darken the darker color or lighten the lighter color
- Adjust saturation to increase perceived contrast
- Suggest the minimum lightness shift needed to pass
- Provide the adjusted color value
Failing pair: #0f3460 on #e94560 (3.0:1, needs 4.5:1)
Suggestions:
Option A: Darken background → #0a2340 (ratio: 4.6:1) PASS
Option B: Lighten foreground → #ff6b7f (ratio: 4.5:1) PASS
Option C: Use white text instead → #ffffff on #e94560 (2.6:1) FAIL
Use white on darkened → #ffffff on #c93050 (4.8:1) PASSOutput Format
Summary View (default)
Accessibility Report — AA Standard
Palette: #1a1a2e, #16213e, #0f3460, #e94560, #ffffff
Overall: 6/10 pairs pass AA (60%)
PASSING (6):
#1a1a2e on #e94560 — 5.4:1 (AA normal text)
#1a1a2e on #ffffff — 14.2:1 (AAA normal + large)
#16213e on #e94560 — 4.5:1 (AA normal text, borderline)
#16213e on #ffffff — 11.8:1 (AAA normal + large)
#0f3460 on #ffffff — 7.9:1 (AAA normal + large)
#e94560 on #1a1a2e — 5.4:1 (AA normal text)
FAILING (4):
#1a1a2e on #16213e — 1.2:1 (needs 4.5:1)
#1a1a2e on #0f3460 — 1.8:1 (needs 4.5:1)
#16213e on #0f3460 — 1.5:1 (needs 4.5:1)
#e94560 on #ffffff — 2.6:1 (needs 4.5:1)
Recommendations:
- Avoid using dark colors on each other for text
- #e94560 needs a darker variant for use on white backgrounds
- Consider adding a dark text color (#1a1a2e) for light backgroundsPair Check View
Contrast Check
Foreground: #e94560 (Coral Red)
Background: #1a1a2e (Dark Navy)
Contrast Ratio: 5.4:1
AA Normal Text (4.5:1): PASS
AA Large Text (3.0:1): PASS
AAA Normal Text (7.0:1): FAIL (need 7.0:1)
AAA Large Text (4.5:1): PASSBest Practices
- Test text on backgrounds, not just swatches — A palette can look cohesive but fail for readability
- Check both directions — Light text on dark AND dark text on light
- Include white and near-black — Most palettes need a light and dark neutral for text
- Don't rely on color alone — Use icons, patterns, or labels alongside color for meaning
- Test at actual sizes — Large text thresholds are different from normal text
- Consider dark mode — Recalculate for dark mode backgrounds
© jmagly, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in agentic/code/plugins/color-palette/skills/color-accessibility of jmagly/aiwg.
Open the folder on GitHubat commit dda238f
Compare with similar skills
Color Accessibility next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Color Accessibility this skilljmagly/aiwg | 220 | — | ~1.6k | Automated safety check: Pass | MIT | |
| Web Interface Guidelines Reviewervercel-labs/openreview | 1.7k | 98 repos | ~308 | Automated safety check: Pass | None | |
| Accessibility Reviewmarkmead/hyperui | 12k | 1 repos | ~1.1k | Automated safety check: Pass | MIT | |
| Web Animation DesignbaptisteArno/typebot.io | 11k | 2 repos | ~2.7k | Automated safety check: Pass | Custom licence | |
| Accessibility Fixeribelick/ui-skills | 9.5k | 4 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Wcag Audit PatternsvmDeshpande/ai-agent-automation | 178 | 11 repos | ~610 | Automated safety check: Pass | Apache-2.0 |
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Categories
Questions about Color Accessibility
What does Color Accessibility do?
WCAG accessibility analysis for color palettes including contrast ratios, compliance checking, and remediation suggestions. Color Accessibility is an agent skill from jmagly/aiwg. WCAG accessibility analysis for color palettes including contrast ratios, compliance checking, and remediation suggestions.
When should I use Color Accessibility?
Color Accessibility fits situations like: user needs to verify colors meet accessibility standards; tasks that involve Accessibility.
How do I install Color Accessibility in Claude Code?
Run `npx skills add jmagly/aiwg --skill color-accessibility -a claude-code`. Or copy the skill folder (agentic/code/plugins/color-palette/skills/color-accessibility in jmagly/aiwg) into .claude/skills/color-accessibility in your project. Claude Code loads it when a task matches its description.
How do I install Color Accessibility in Codex?
Run `npx skills add jmagly/aiwg --skill color-accessibility -a codex`. Or copy the skill folder (agentic/code/plugins/color-palette/skills/color-accessibility in jmagly/aiwg) into .agents/skills/color-accessibility in your project. Codex loads it when a task matches its description.
Can I use Color Accessibility in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jmagly/aiwg --skill color-accessibility -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/color-accessibility, .gemini/skills/color-accessibility, .github/skills/color-accessibility and .opencode/skills/color-accessibility in your project.
What does Color Accessibility need to run?
SKILL.md names no scripts, command-line tools or credentials: Color Accessibility is instructions for the agent only.
Does Color Accessibility access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Color Accessibility safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Color Accessibility use?
Color Accessibility is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Color Accessibility use?
About 1.6k tokens (SKILL.md is roughly 6.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Color Accessibility?
Skills that share tags, products or a category with Color Accessibility: Web Interface Guidelines Reviewer (vercel-labs/openreview, 1.7k stars), Accessibility Review (markmead/hyperui, 12k stars), Web Animation Design (baptisteArno/typebot.io, 11k stars) and Accessibility Fixer (ibelick/ui-skills, 9.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Color Accessibility?
jmagly (a GitHub user) maintains it in jmagly/aiwg, which has 220 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on October 5, 2026.
Source: jmagly/aiwg on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.