Strava Mobile — design system & UI screens

Health & Fitness · 4 screens · strava.com

This is a social fitness tracking feed showing a detailed post about a group running activity with logged stats and community engagement. The screen uses a dark background with a prominent hero image of runners in action, overlaid stats cards (distance, time, elevation, achievements), engagement metrics (kudos count, comments), and a comment thread below. A top navigation bar offers search, home, messages, and notifications, while a bottom action bar provides like, comment, and share options.

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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/strava-mobile.

Decoded design system

Strava Mobile's decoded design system: background #21211F, text #9FC1CC, accent #113448, link #113448, primary #113448; type scale h1 34px / h2 22px / body 17px; 8px spacing base; 12px base radius. The single interactive/action color is #113448 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#21211F`
surface	`#282A29`
border	`#333938`
text	`#9FC1CC`
text_muted	`#6F848A`
primary	`#113448`
accent	`#113448`
link	`#113448`
button_bg	`#113448`
button_text	`#21211F`

Using these colors

Action color #113448 — the single interactive color; only on things you click or must notice, never large fills.
primary, accent, link, button_bg are all #113448 — one role, not several (the action color).
accent #113448 — 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: 8px
scale: 4px, 6px, 10px, 12px, 15px, 20px, 24px, 26px, 32px, 40px

Radii

base: 12px
button: 12px

Shadows (elevation)

overlay: rgba(0, 0, 0, 0.3) 0px 30px 70px 0px

Motion

Micro-interactions run at 150ms (dominant) with ease.

durations: 150ms · 100ms · 300ms
easings: ease
animated properties: color, background-color, border-color, opacity

Native design tokens

Token	Value
`--color-socialinstagrampink`	`#d800b8`
`--color-extendedredr45`	`#EC5D5D`
`--color-socialfacebookblue`	`#0865fe`
`--color-extendedyellowy3`	`#FFC700`
`--color-secondaryg5`	`#A9E27C`
`--color-expandedsand`	`#f2f2ed`
`--color-socialinstagramred`	`#ff005e`
`--color-extendedvioletv2`	`#730AB4`
`--color-socialgoogleblue`	`#4285f4`
`--color-extendedgreeng7`	`#E2F5D3`

…and 110 more measured on the page.

Button states (measured)

primary hover: border 1px solid rgb(221, 72, 0) · background #DD4800
primary focus: border 1px solid rgb(221, 72, 0) · background #DD4800 · outline 5px auto rgb(16, 16, 16)

Layout (measured)

container max-width: 1600px
nav: 73px
common grid: 3 columns

Responsive (measured)

breakpoints: 480px · 601px · 768px · 992px · 1200px · 1248px
mobile (390px): hero 32px · nav inline

Full design system, per-section tokens & DESIGN.md / Tailwind / CSS exports →