color-math-accessibility
Calculate, review, and generate web color systems using RGB, HSL, LAB, OKLCH, contrast ratios, luminance, opacity, blend modes, and light/dark mode transformations. Use when auditing accessible colors, converting color models, deriving palettes, checking WCAG contrast, building theme tokens, or debugging opacity and CSS blend math.
Works with
--- name: color-math-accessibility description: Calculate, review, and generate web color systems using RGB, HSL, LAB, OKLCH, contrast ratios, luminance, opacity, blend modes, and light/dark mode transformations. Use when auditing accessible colors, converting color models, deriving palettes, checking WCAG contrast, building theme tokens, or debugging opacity and CSS blend math. license: MIT --- # Color Math Accessibility Use this skill when colors need to be explainable, accessible, and reproducible. It focuses on color math that affects real UI outcomes: contrast, palette relationships, perceptual lightness, opacity, and blending. ## Quick Start 1. Read `guidelines.md` to select the smallest relevant file set. 2. Load `references/color-systems/rules.md` for implementation decisions. 3. Load `references/color-systems/examples.md` when editing code. 4. Use `workflows/audit-color-system.md` for multi-step derivation or debugging. ## Contents | Resource | Purpose | |----------|---------| | `guidelines.md` | Routes tasks to the right reference files | | `references/source-map.md` | Book source and chapter/section traceability | | `references/color-systems/knowledge.md` | Core concepts and terminology | | `references/color-systems/rules.md` | Practical rules, guidelines, and exceptions | | `references/color-systems/examples.md` | Bad/good examples and refactoring approach | | `references/color-systems/patterns.md` | Reusable formula and implementation patterns | | `references/color-systems/checklist.md` | Review checklist and red flags | | `workflows/audit-color-system.md` | Step-by-step workflow | ## Source Derived from *Math for Web Design* by Paul McFedries, Chapter 7: The mathematics of color. Citations are tracked in `references/source-map.md`.
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