color-palettelisted

# Colour Palette <!-- anthril-output-directive --> > **Output path directive (canonical — overrides in-body references).** > All file outputs from this skill MUST be written under `.anthril/data/color-palette/`. > Run `mkdir -p .anthril/data/color-palette` before the first `Write` call. > Primary artefact: `.anthril/data/color-palette/<artefact>`. > Do NOT write to the project root or to bare filenames at cwd. > Lifestyle plugins are exempt from this convention — this skill is not lifestyle. ## Skill Metadata - **Skill ID:** color-palette - **Category:** Brand Visual System - **Output:** Brand colour palette specification (markdown + token-ready data) - **Complexity:** Medium - **Estimated Completion:** 10–15 minutes (interactive) --- ## Description Generates a complete brand colour palette: primary, secondary, semantic (success/warning/error/info), and a full neutral ramp. Every colour is documented in HEX, RGB, HSL, and OKLCH formats. Every contrast pair the brand will actually use in product/web is validated against WCAG 2.2 AA and AAA thresholds via the bundled `contrast-checker.py` script. The output is designed to feed directly into the `design-tokens` skill for token export, and into the `brand-guidelines` skill as the colour-standards section. Use this skill when: - Building a colour system for a new brand - Auditing or refreshing an existing palette - Validating accessibility of an existing colour set - Adding semantic colours to a palette that only has brand