Layered dark systems: two surface tiers, one primary that glows against the ground, and a desaturated text tone tuned so a dark screen never becomes a black hole. Roles and contrast checked for real dark-mode use.
A slate-blue dark surface with one cyan primary. The accent is loud so status and alerts read at a glance against the calm chrome.
Champagne used the way a metal should be, at a fraction of the surface, over graphite and true black. No second accent and no colour; the restraint is the luxury.
Two accents at maximum chroma against near-black. Everything structural stays desaturated so the signal colors never compete.