Microsoft Teams Mobile — design system & UI screens

Communication · 8 screens · teams.microsoft.com

A grid layout displaying video call participants with their profile photos and names labeled below each tile. The interface includes a control bar at the bottom with video, microphone, speaker, and more options, plus a red call-end button. Official Google Play listing screenshot.

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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/microsoft-teams-mobile.

Decoded design system

Microsoft Teams Mobile's decoded design system: background #FFFFFF, text #2F2B3E, accent #303AA7, link #303AA7, primary #303AA7; type scale h1 34px / h2 22px / body 17px; 8px spacing base; 12px base radius. The single interactive/action color is #303AA7 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#FFFFFF`
surface	`#F2F2F3`
border	`#DFDFE2`
text	`#2F2B3E`
text_muted	`#7E7B87`
primary	`#303AA7`
accent	`#303AA7`
link	`#303AA7`
button_bg	`#303AA7`
button_text	`#FFFFFF`

Using these colors

Action color #303AA7 — the single interactive color; only on things you click or must notice, never large fills.
primary, accent, link, button_bg are all #303AA7 — one role, not several (the action color).
accent #303AA7 — 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, 8px, 12px, 16px, 24px, 32px, 48px, 64px

Radii

base: 12px
button: 12px

Shadows (elevation)

card: rgba(0, 0, 0, 0.2) 0px 2px 6px 0px

Motion

Micro-interactions run at 250ms (dominant) with ease-in.

durations: 250ms · 300ms · 500ms
easings: ease-in · ease

Button states (measured)

primary hover: background #005DA6
primary focus: background #005DA6 · outline 2px solid rgb(0, 0, 0)

Motion choreography (measured)

Load order: div.lightbox-cover → div.lightbox-cover → div.sign-in-box → div.background-image → div×2 → div.pagination-view

Input (measured)

height 36px · radius 0px

Responsive (measured)

breakpoints: 320px · 539px · 768px · 992px · 1400px
mobile (390px): nav inline

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