Outlook Mobile — design system & UI screens

Communication · 8 screens · outlook.com

Multi-account email dashboard with a left sidebar showing integrated services (M365, Google, Outlook, Yahoo) and a collapsible folder structure. Main content area displays email folders (Inbox, Drafts, Archive, etc.) with unread counts and icons. Official Google Play listing screenshot.

Open in Mozaika →

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/outlook-mobile.

Decoded design system

Outlook Mobile's decoded design system: background #FFFFFF, text #000000, accent #0063B7, link #0063B7, primary #0063B7; type scale h1 34px / h2 22px / body 17px; 4px spacing base; 12px base radius. The single interactive/action color is #0063B7 — 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	`#0063B7`
accent	`#0063B7`
link	`#0063B7`
button_bg	`#0063B7`
button_text	`#FFFFFF`

Using these colors

Action color #0063B7 — the single interactive color; only on things you click or must notice, never large fills.
primary, accent, link, button_bg are all #0063B7 — one role, not several (the action color).
accent #0063B7 — 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: 4px, 5px, 6px, 8px, 10px, 12px, 20px, 24px, 35px, 41px

Radii

base: 12px
button: 12px

Motion

Micro-interactions run at 125ms (dominant) with ease-in-out.

durations: 125ms · 150ms
easings: ease-in-out · linear
animated properties: opacity

Native design tokens

Token	Value
`--ds-app-color-base-default-fg-heading`	`#0e1726`
`--ds-app-color-base-default-fg-body`	`#3a4c56`
`--ds-app-color-base-default-fg-highlight`	`#005597`
`--ds-app-color-base-default-fg-accent`	`#0078d4`
`--ds-app-color-base-default-bg-opt1`	`#f4fafd`
`--ds-app-color-base-default-bg-opt2`	`#dceef8`
`--ds-app-color-base-default-bg-opt3`	`#fff`
`--ds-app-color-base-default-bg-opt4`	`#00ff26`
`--ds-app-color-base-default-border-subtle`	`#cbe6f4`
`--ds-app-color-base-default-border-strong`	`#002948`

…and 110 more measured on the page.

Button states (measured)

primary focus: outline 3px dotted rgb(0, 0, 0)

Layout (measured)

container max-width: 1300px
nav: 54px

Responsive (measured)

breakpoints: 539px · 768px · 859px · 1083px · 1400px
mobile (390px): hero 29px · nav hamburger

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