Threads Mobile — design system & UI screens
A community feed screen for a book-focused social platform showing member count, online status, and a "Top posts" dropdown feed with threaded discussion cards. Each post displays user avatar, username, post content, timestamp, and engagement actions (likes, comments, shares). Official Google Play listing screenshot.
This is a static, crawlable rendering for search & AI engines. The interactive version — filters, live decode console, copy & export — is at https://mozaika.design/website/threads-mobile.
Decoded design system
Threads Mobile's decoded design system: background #FFFFFF, text #000000, accent #FFEC00, link #FFEC00, primary #FFEC00; type scale h1 34px / h2 22px / body 17px; 4px spacing base; 12px base radius. The single interactive/action color is #FFEC00 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.
Color roles
| Role | Value |
|---|---|
| bg | #FFFFFF |
| surface | #EFEFEF |
| border | #D8D8D8 |
| text | #000000 |
| text_muted | #606060 |
| primary | #FFEC00 |
| accent | #FFEC00 |
| link | #FFEC00 |
| button_bg | #FFEC00 |
| button_text | #FFFFFF |
Using these colors
- Action color
#FFEC00— the single interactive color; only on things you click or must notice, never large fills. primary,accent,link,button_bgare all#FFEC00— one role, not several (the action color).- accent
#FFEC00— THE accent / action color — interactive & must-notice only (buttons, links, focus, one key highlight); never large fills or backgrounds. Scarcity is what makes it read as designed.
Typography
- h1: 34px
- h2: 22px
- body: 17px
Spacing
- base unit: 4px
- scale: 2px, 4px, 6px, 8px, 12px, 15px, 16px, 20px, 24px, 32px
Radii
- base: 12px
- button: 12px
Shadows (elevation)
- card:
rgba(0, 0, 0, 0.04) 0px 0px 12px 0px - overlay:
rgba(0, 0, 0, 0.08) 0px 10px 21px 0px
Motion
Micro-interactions run at 200ms (dominant) with ease.
- durations: 200ms · 300ms · 150ms
- easings:
ease·ease-in-out - animated properties: none
Native design tokens
| Token | Value |
|---|---|
--fds-black | #000000 |
--fds-black-alpha-05 | rgba(0, 0, 0, 0.05) |
--fds-black-alpha-10 | rgba(0, 0, 0, 0.1) |
--fds-black-alpha-15 | rgba(0, 0, 0, 0.15) |
--fds-black-alpha-20 | rgba(0, 0, 0, 0.2) |
--fds-black-alpha-30 | rgba(0, 0, 0, 0.3) |
--fds-black-alpha-40 | rgba(0, 0, 0, 0.4) |
--fds-black-alpha-50 | rgba(0, 0, 0, 0.5) |
--fds-black-alpha-60 | rgba(0, 0, 0, 0.6) |
--fds-black-alpha-80 | rgba(0, 0, 0, 0.8) |
…and 110 more measured on the page.
Button states (measured)
- primary focus: box-shadow
rgb(255, 255, 255) 0px 0px 0px 2px, rgb(24, 119, 242) 0px 0px 0px 4px
Motion choreography (measured)
Load order: div.x4afe7t → div.x1a2a7pz×8 → ::view-transition-group×2
Overlay recipe (measured)
dialog panel: rgba(0, 0, 0, 0) · radius 0px
Themes
dark counterpart: background #0A0A0A, text #F3F5F7.
Responsive (measured)
- mobile (390px): nav inline
Full design system, per-section tokens & DESIGN.md / Tailwind / CSS exports →