GitHub Mobile — design system & UI screens

Dev Tools · 11 screens · github.com

GitHub-style code repository and issue tracking dashboard for developers managing work across projects and repositories. The home feed displays a "My Work" section with shortcuts to Issues, Pull Requests, Discussions, Top Repositories, and Organizations, followed by a "Favorites" section listing starred repositories with their organization badges. Navigation uses a bottom tab bar for quick access to Home, Inbox, Explore, Profile, and additional 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/github-mobile.

Decoded design system

GitHub Mobile's decoded design system: background #FFFFFF, text #000000, accent #6839BE, link #6839BE, primary #6839BE; type scale h1 34px / h2 22px / body 17px; 4px spacing base; 12px base radius. The single interactive/action color is #6839BE — 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	`#6839BE`
accent	`#6839BE`
link	`#6839BE`
button_bg	`#6839BE`
button_text	`#FFFFFF`

Using these colors

Action color #6839BE — the single interactive color; only on things you click or must notice, never large fills.
primary, accent, link, button_bg are all #6839BE — one role, not several (the action color).
accent #6839BE — 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, 3px, 4px, 8px, 12px, 16px, 20px, 24px, 32px, 48px

Radii

base: 12px
button: 12px

Motion

Micro-interactions run at 200ms (dominant) with cubic-bezier(0.165, 0.84, 0.44, 1).

durations: 200ms · 300ms · 800ms
easings: cubic-bezier(0.165, 0.84, 0.44, 1) · ease-out
animated properties: transform, opacity, color, background-color

Native design tokens

Token	Value
`--color-workflow-card-bg`	`#151b23`
`--color-workflow-card-header-shadow`	`#1b1f230a`
`--color-bg-discussions-row-emoji-box`	`#57606a`
`--color-notifications-row-read-bg`	`#0d1117`
`--color-notifications-row-bg`	`#151b23`
`--color-user-mention-fg`	`#d29922`
`--color-mktg-btn-shadow-outline`	`#ffffff40 0 0 0 1px inset`
`--color-marketing-icon-primary`	`#79c0ff`
`--color-marketing-icon-secondary`	`#1f6feb`
`--color-project-header-bg`	`#0d1117`

…and 110 more measured on the page.

Button states (measured)

primary hover: background color(srgb 0.0263529 0.444706 0.141647)
primary focus: outline 4px solid rgb(3, 119, 255)

Layout (measured)

container max-width: 1280px
nav: 72px absolute
common grid: 12 columns

Motion choreography (measured)

Load order: div.lp-Intro → div.Primer_Brand__LogoSuite-×2 → p.Primer_Brand__Text-modul×2 → p.Primer_Brand__Text-modul×2 → div.BackToTop×2

Scroll reveal: 15 elements rest at opacity 0, translateY(24px), animate in over 0.8s cubic-bezier(0.2, 0.4, 0.2, 1).

Stagger: div ×3 — 100ms apart.

Input (measured)

height 41px · radius 8px

Responsive (measured)

breakpoints: 544px · 750px · 768px · 804px · 1011px · 1280px
mobile (390px): hero 32px · nav inline

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