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.
npx skills add NickCrew/Claude-Cortex --skill color-palettegit clone --depth 1 https://github.com/NickCrew/Claude-CortexWrote 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.
[](https://agentmods.dev/skills/nickcrew/claude-cortex/color-palette)<a href="https://agentmods.dev/skills/nickcrew/claude-cortex/color-palette"><img src="https://agentmods.dev/badge/skills/nickcrew/claude-cortex/color-palette.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00068 | $0.03010 |
| Opus 5 | $0.00034 | $0.01505 |
| Sonnet 5 | $0.00014 | $0.00602 |
| Haiku 4.5 | $0.00007 | $0.00301 |
Grade A, and why
color-palette 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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 197 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Color Palette
Overview
This skill helps you create purposeful, accessible, and cohesive color palettes for digital products and brands. Color is one of the highest-leverage design decisions you can make—it communicates brand personality, guides user attention, conveys meaning, and determines whether your product is usable by people with visual impairments. This skill covers brand palette creation, semantic color systems (primary, secondary, neutral, semantic), accessibility validation against WCAG standards, and design token documentation. The output is a structured, ready-to-use color system, not a mood board.
When to Use
- Creating a color palette for a new brand, product, or design system
- Extending an existing brand palette for digital use
- Auditing an existing palette for accessibility issues
- Defining semantic color roles (primary, danger, success, warning, neutral)
- Generating color token documentation for developer handoff
- Choosing colors for a specific context (dark mode, data visualization, illustration)
When NOT to Use
- Photo editing or color grading (use dedicated image editing tools)
- Print production color matching (CMYK and Pantone matching requires specialized tools)
- Interior design or physical product color specification
- Fashion or textile color selection
Quick Reference
| Task | Approach |
|---|---|
| Brand palette | Start with 1 primary hue, add 1–2 accent hues, build neutrals |
| Accessibility | Text on background must meet 4.5:1 (AA) or 7:1 (AAA) contrast ratio |
| Semantic colors | Map roles: primary, secondary, success (#22c55e range), warning (#f59e0b range), danger (#ef4444 range) |
| Neutral scale | Generate 9–11 shades (50–950) from near-white to near-black |
| Dark mode | Don't invert; remap semantic roles to dark-optimized values |
| Data viz | Use categorical (distinct hues) or sequential (single hue, varying lightness) palettes |
| Token naming | Use semantic names: color.brand.primary, color.feedback.error, not hex values |
| Tints and shades | Generate 9 steps per color; 500 = base, 100 = lightest, 900 = darkest |
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.
- 4d ago First seen · 197 lines · 68 tokens per session scan A b35acf5c8e24
color-palette is a skill published in the GitHub repository NickCrew/Claude-Cortex (38 stars, last pushed 2mo ago), licensed MIT. It adds 68 tokens to every session and 3,010 once invoked, about $0.0003 per session on Opus 5. 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 2026-09-03.
Other skills, from other repositories
design-color-palette
Use when creating a cohesive, purposeful color palette for a brand, illustration, UI, or fine-art project.
color-picker
Color conversion, palette generation, contrast checking, and design utilities for HEX, RGB, and HSL formats.
Color Palette Generator
Create beautiful, accessible color schemes for any project.
color-palette-brief
Generates a detailed color palette brief with named colors, hex codes, rationale, and usage guidance for a media project's visual identity — show artwork, editorial imagery, website, or social media.
color-theory-palette-harmony-expert
Expert in color theory, palette harmony, and perceptual color science for computational photo composition. Specializes in earth-mover distance optimization, warm/cool alternation, diversity-aware palette selection, and hue-based photo sequencing. Activate on "color palette", "color harmony", "warm cool", "earth mover…
ui-design
Comprehensive UI design skill covering fundamentals, patterns, and anti-patterns. Layout, typography, color, spacing, accessibility, motion, and component design. Use when building any web interface, reviewing design quality, or creating distinctive UIs.