The UK government's service design system: near-black #0b0c0c text, GDS Transport type, underlined blue links, square corners, unmistakable #ffdd00 yellow focus states, and a green action button. Content-first, WCAG-obsessed, and deliberately unglamorous — built so millions of people can complete tasks like renewing a passport.
Primary actionThe focus state: any focused link or control gets a #ffdd00 yellow highlight with a thick #0b0c0c black underline/outline — visible from across the room and the same on every GOV.UK service.