color-contrast

Run `npx skills use "https://github.com/mgifford/accessibility-skills" --skill "mgifford/accessibility-skills/color-contrast"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.

Use the skills in "https://github.com/mgifford/accessibility-skills" that are relevant to the current task. Run `npx skills add "https://github.com/mgifford/accessibility-skills"` and select the relevant skills, then follow their instructions.