YouTube Mobile — design system & UI screens

Entertainment · 8 screens · youtube.com

A bottom sheet modal overlay displaying creation options for YouTube content. Three primary actions are presented vertically: "Create a Short" (marked beta), "Upload a video," and "Go live," each with an icon and descriptive text. The sheet has a clean white background with rounded top corners and a close button in the top-right. 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/youtube-mobile.

Decoded design system

YouTube Mobile's decoded design system: background #000000, text #FFFFFF, accent #E9528F, link #E9528F, primary #E9528F; type scale h1 34px / h2 22px / body 17px; 4px spacing base; 12px base radius. The single interactive/action color is #E9528F — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#000000`
surface	`#0F0F0F`
border	`#262626`
text	`#FFFFFF`
text_muted	`#9E9E9E`
primary	`#E9528F`
accent	`#E9528F`
link	`#E9528F`
button_bg	`#E9528F`
button_text	`#000000`

Using these colors

Action color #E9528F — the single interactive color; only on things you click or must notice, never large fills.
primary, accent, link, button_bg are all #E9528F — one role, not several (the action color).
accent #E9528F — 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, 6px, 8px, 12px, 14px, 15px, 16px, 18px, 24px, 32px

Radii

base: 12px
button: 12px

Shadows (elevation)

card: rgba(0, 0, 0, 0.14) 0px 16px 24px 2px, rgba(0, 0, 0, 0.12) 0px 6px 30px 5px, rgba(0, 0, 0, 0.4) 0px 8px 10px -5px

Motion

Micro-interactions run at 200ms (dominant) with cubic-bezier(0.05, 0, 0, 1).

durations: 200ms · 300ms
easings: cubic-bezier(0.05, 0, 0, 1) · ease
animated properties: transform, opacity

Native design tokens

Token	Value
`--t7f4f2c6d54836ce0`	`rgba(0,0,0,0.05)`
`--t7d8b8e5ee291aec0`	`rgba(255,255,255,0.1)`
`--t4726c68ef6d7b08f`	`#deffde`
`--tf0a0d1154827847f`	`#ffeacf`
`--t3e41d7b17b187f69`	`#fff`
`--tff65993384bb4560`	`#c8c9f9`
`--t854c79338d8ca8a7`	`#c30027`
`--t20480717de80f555`	`rgba(0,0,0,0.1)`
`--t2d807bb79e75606d`	`#065fd4`
`--t617db776af0de196`	`#0556bf`

…and 110 more measured on the page.

Button states (measured)

primary hover: border-radius 10px · background rgba(0, 0, 0, 0.05)

Layout (measured)

nav: 56px

Motion choreography (measured)

Load order: tp-yt-iron-overlay-backdrop.opened

Overlay recipe (measured)

dialog panel: #FFFFFF · radius 2px

Responsive (measured)

breakpoints: 392px · 527px · 549px · 600px · 656px · 792px
mobile (390px): hero 14px · nav inline

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