A design system picked from data, checked in a browser

Claude asks UI/UX Pro Max's data for a palette, fonts and rules that fit your product, writes them as tokens and moves your page onto them. A check measures every colour pair and proves the page uses only the tokens.

Our run, 2026-09-28. UI/UX Pro Max picked the palette from its data. Before the page changed, the check failed 2 of 15 pairs: the skill's form field border (1.23:1, needs 3:1) and #D97706 from the old slots.js (2.86:1, needs 4.5:1). Claude darkened both.