01 A system, not a single accent
Neutrals for text/background, a brand accent for the CTA, and semantic colors for success/error states. Keep the number of accent colors deliberately small.
02 Contrast and culture
Check WCAG compliance. Consider niche associations, but don't copy competitors 1-to-1.
03 Testing
A/B testing a button's color only makes sense once the offer and structure are clear. Color won't save a weak message.
