About Samsung One UI
Samsung One UI split every screen in two. The top half is open air: one oversized title and a small count, nothing to tap. The bottom half is where the lists, switches and buttons live, inside the arc a thumb can actually reach on a 6-inch phone.
Content sits in near-white rounded cards on a light grey window, separated by tone rather than shadow. A single trustworthy blue, #0381FE, marks the FAB, sliders and highlights. Night mode flips the whole thing to near-black with charcoal cards.
- Origin
- Suwon, South Korea
- Era
- 2018 announced at SDC; Roboto-default visual 2019–2023 (One UI 1.0 through 5.1)
- Key figures
- DJ Koh (Koh Dong-jin) · Christian Robertson
- Movements
- one-handed reachability design · large-screen Android skins · system-wide dark mode (2019)
Samsung One UI design spec
Colors
Background
Surface
Primary
Secondary
Accent
Text
Typography
RobotoHeadings
Roboto MonoMono
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