wcag-audit-perceivable-color

We need to produce a 2-3 sentence plain-text summary, objective, factual, no marketing language, no superlatives, no calls to action, natural prose, no bullet points, no headings, no markdown formatting, no quotes, at most 60 words. Must be only the summary text. We need to explain what the skill does, what problem it solves, when to use it. 2-3 sentences. Let's craft: "The skill evaluates whether color schemes meet WCAG 2.1 success criteria for perceivable contrast and non‑color dependent information.