Mostly lean and table-dense with no basic-concept padding, but could be tightened: the large-text threshold is restated (Overview and the Text section) and the canonical-pairings table includes near-obvious entries like #000/#FFF = 21:1. Not a 3 because of this redundancy and minor over-explanation; not a 1 because it generally assumes Claude's competence and avoids verbose prose.

Provides a complete, copy-paste-ready check-contrast.js script, specific hex/ratio pairs, concrete tool steps ('Chrome DevTools -> Styles -> color swatch -> Contrast'), and a failures table with exact fixes (#999 -> #767676). Not a 2 because the guidance is fully executable rather than pseudocode or abstract direction.

The design-token bulk-checking workflow is a clear sequence with a validation feedback loop - the script collects violations and exits non-zero, then wires into CI via a11y-violation-gate. Sections are well-ordered (Overview -> ratios -> measuring -> checking -> failures -> references). Not a 2 because the batch operation includes an explicit validation checkpoint (exit(1) on violations).

Well-organized into clearly headed sections with a dedicated References block linking one level deep to external URLs (WCAG22, WebAIM) and sibling skills; no nested referral chains and easy navigation. No bundle files exist, which is appropriate for this self-contained table-dense reference. Not a 2 because references are clearly signaled and content is appropriately scoped to a single overview file.

Names multiple concrete capabilities and actions - 'covers SC 1.4.3 ... 1.4.13', 'measurement formula references', 'bulk design-token checking patterns', plus the Use-when actions 'designing a color palette, reviewing a component for accessibility, or auditing existing CSS'. Not a 2 because it lists several specific concrete actions rather than just naming a domain.

Explicitly answers what ('Reference for WCAG 2.2 color-contrast conformance ... canonical contrast ratios ... bulk design-token checking patterns') and when ('Use when designing a color palette, reviewing a component for accessibility, or auditing existing CSS for contrast violations'). Not a 2 because the 'Use when' trigger clause is explicit, not merely implied.

Uses natural terms a user would say - 'color palette', 'accessibility', 'reviewing a component', 'auditing existing CSS for contrast violations', 'WCAG'. Good coverage of common phrasings; not a 2 because it captures multiple natural variations rather than a single keyword.

Scoped to a clear niche (WCAG 2.2 color-contrast conformance) with distinct triggers unlikely to fire for sibling skills; cross-references to wcag-checklist-builder/axe-a11y are in the body, not the description. Not a 2 because the triggers are specific to contrast work and would not broadly overlap with other skills.