- Replace HSL-based color adjustments with HCT (Material Design 3 standard)
- Use proper WCAG contrast ratio calculations instead of luminance threshold
- Implement binary search to find minimum tone adjustment for contrast
- Ensure minimum chroma of 36 for primary colors to prevent washed-out highlights
- Add color scheme caching for instant loading on revisits
- Pre-extract colors on album tap for faster initial load
Fixes issue where highlighted library button was darker than unhighlighted
state on albums with dark/muted covers (e.g., Portishead, NIHT).
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
