# Contrast Solver Helper

> Implement APCA/WCAG2 contrast requirements and solver behavior per src/planning/spec-v0.3.md and src/planning/roadmap-v0.3.md, with minimal tests.

- Skill: `majiayu000/contrast-solver-helper` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds add majiayu000/contrast-solver-helper`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/contrast-solver-helper/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Product & Planning
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/contrast-solver-helper

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# Contrast Solver Helper

Use this skill when implementing or validating contrast logic, APCA/WCAG2 targets, or solver behavior in `src/contrast`.

## Workflow

1. Read `src/planning/spec-v0.3.md` and the relevant phase in `src/planning/roadmap-v0.3.md`.
2. Implement contrast evaluation for APCA and WCAG2.
3. Implement solver behavior for targets and failure modes (best-effort vs strict).
4. Add minimal tests for target attainment and failure handling.

## Guardrails

- Respect `ContrastRequirement` and `OutputOptions.strict` behavior.
- Prefer deterministic solver paths; document edge-case behavior.