Twitch Mobile — decoded design system

twitch.tv · dark · consumer · deep decode — measured live

Twitch Mobile's design system, decoded live by Mozaika: measured color roles, type scale, buttons with real hover/focus states, motion and the brand's own tokens.

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/decode/twitch.tv.

Decoded design system

Twitch Mobile's decoded design system: background #F7F7F8, text #0E0E10, accent #008D8F, link #5C16C5, primary #008D8F; type scale h1 18px / h2 22px / body 14px; 4px spacing base; 12px base radius. The single interactive/action color is #9147FF — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #9147FF — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent are all #008D8F — one role, not several (the action color).
• accent #008D8F — accent for emphasis — keep it rare on the page.
• link #5C16C5 — inline text links and link-styled controls.

Typography

• Heading: Roobert
• Body: Inter
• h1: 18px
• h2: 22px
• body: 14px

Spacing

• base unit: 4px
• scale: 2px, 3px, 4px, 5px, 6px, 8px, 12px, 15px, 16px, 20px

Radii

• base: 12px
• button: 9999px

Shadows (elevation)

• subtle: rgba(0, 0, 0, 0.13) 0px 1px 2px 0px, rgba(0, 0, 0, 0.08) 0px 0px 2px 0px
• card: rgba(0, 0, 0, 0.22) 0px 6px 16px 0px, rgba(0, 0, 0, 0.08) 0px 0px 4px 0px

Motion

Micro-interactions run at 100ms (dominant) with ease.

• durations: 100ms · 200ms · 150ms
• easings: ease · ease-in
• animated properties: transform, opacity, none, border

Native design tokens

…and 110 more measured on the page.

Button states (measured)

• primary hover: background #772CE8
• primary focus: box-shadow rgb(119, 44, 232) 0px 0px 6px 0px · background #772CE8 · outline 1px auto rgb(16, 16, 16)

Layout (measured)

• nav: 50px

Motion choreography (measured)

Load order: div.shell-loader__spinner → div.shell-loader → div.ScLoadingSpinnerCircle-s×2 → span.ScPlaceholderFill-sc-wb1×69 → div.ScLoadingSpinner-sc-bvza → div.ScTransitionBase-sc-hx4q×10

Overlay recipe (measured)

dialog panel: rgba(0, 0, 0, 0) · radius 0px

Input (measured)

height 36px · radius 8px 0px 0px 8px · focus ring rgb(119, 44, 232) 0px 0px 0px 2px, rgb(119, 44, 232) 0px 0px 0px 2px inset

Responsive (measured)

• breakpoints: 768px · 1440px
• mobile (390px): hero 18px · nav inline

Install it

Drop this measured system into any shadcn/Tailwind project in one command:

npx shadcn add mozaika.design/r/decode/twitch.tv

Or as a Meta Astryx theme — a ready defineTheme file with the measured hover/press states baked in:

curl -o src/themes/twitch.theme.ts https://mozaika.design/api/astryx/decode/twitch.tv.ts

registry item · astryx theme · or query it over MCP: get_design_system("Twitch Mobile")

Export: DESIGN.md

# Twitch Mobile — Design System

> dark, consumer, high — deep decode (measured live)

## Colors

| Role | Value |
|------|-------|
| bg | `#F7F7F8` |
| surface | `#E9E9EA` |
| border | `#D4D4D5` |
| text | `#0E0E10` |
| text_muted | `#666668` |
| primary | `#008D8F` |
| accent | `#008D8F` |
| link | `#5C16C5` |
| button_bg | `#9147FF` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#9147FF` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `primary`, `accent` are all `#008D8F` — one role, not several.
- **accent** `#008D8F` — accent for emphasis — keep it rare on the page.
- **link** `#5C16C5` — inline text links and link-styled controls.
- **Page coverage** (full-page screenshot pixels): `#F7F7F8` 38.1% · `#451092` 21% · `#010001` 15.9% · `#6B387A` 11.6%

## Typography

- Heading: **Roobert** _(free fallback: Newsreader)_
- Body: **Inter**

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 18px / 500 · lh 20px · tracking -0.18px |
| body | 14px / 400 · lh 20px |
| small | 12px / 600 · lh 17px |

- Weight ladder: 400 · 500 · 600 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** Roobert may be proprietary — safe free fallback: Newsreader (Google Fonts). Inter — free, on Google.

## Spacing
- base unit: 4px (inferred from the measured scale)
- measured scale: 2px, 3px, 4px, 5px, 6px, 8px, 12px, 15px, 16px, 20px — snap all gaps/padding to these

## Radius
- base: 12px
- button: 9999px
- card: 4px
- pill: 9999px
- sharp: 2px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#9147FF` / `#FFFFFF` | none | 9999px | 0px 0px 0px 0px | 600 14px | none |
| secondary | `#FFFFFF` / `#000000` | none | 9999px | 0px 0px 0px 0px | 600 14px | none |

**States (measured, not guessed)**

- primary hover: background `#772CE8`
- primary focus: box-shadow `rgb(119, 44, 232) 0px 0px 6px 0px` · background `#772CE8` · outline `1px auto rgb(16, 16, 16)`
- secondary hover: background `rgba(255, 255, 255, 0.9)`

## Shadows (elevation)
- subtle: `rgba(0, 0, 0, 0.13) 0px 1px 2px 0px, rgba(0, 0, 0, 0.08) 0px 0px 2px 0px`
- card: `rgba(0, 0, 0, 0.22) 0px 6px 16px 0px, rgba(0, 0, 0, 0.08) 0px 0px 4px 0px`

## Motion
- durations: 100ms (dominant) · 200ms · 150ms
- easings: `ease` (dominant) · `ease-in`
- animated properties: transform, opacity, none, border

Micro-interactions use the dominant duration + easing; nothing on the page animates slower than the longest duration above — don't invent springier motion.

## Their own tokens (verbatim from :root)

| Token | Value |
|-------|-------|
| `--color-brand-accent-barrel` | `#f7262d` |
| `--color-brand-accent-crash` | `#ff6905` |
| `--color-brand-accent-cuddle` | `#fa1ed2` |
| `--color-brand-accent-dragon` | `#8205b3` |
| `--color-brand-accent-edgeworth` | `#bd0078` |
| `--color-brand-accent-grass` | `#00991a` |
| `--color-brand-accent-jiggle` | `#f195f9` |
| `--color-brand-accent-junimo` | `#00fa04` |
| `--color-brand-accent-mana` | `#56bde6` |
| `--color-brand-accent-ooze` | `#bfff00` |
| `--color-brand-accent-peach` | `#ea7179` |
| `--color-brand-accent-pylon` | `#00fafa` |

_…and 108 more measured on the page._

Prefer these names when extending their system — it's the brand's actual vocabulary.

## Layout (measured)
- nav: 50px

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 243 | 600 | — | — | 0/0 | — |
| 617 | 1732 | — | — | 0/0 | — |

## Motion choreography (measured)
Load order: `div.shell-loader__spinner` @0ms → `div.shell-loader` @279ms → `div.ScLoadingSpinnerCircle-s`×2 @989ms → `span.ScPlaceholderFill-sc-wb1`×69 @1511ms → `div.ScLoadingSpinner-sc-bvza` @2351ms → `div.ScTransitionBase-sc-hx4q`×10 @2416ms
- `div.ScAnimation-sc-s60rmz-0` — transform scale3d(0.3, 0.3, 0.3)→scale3d(1.1, 1.1, 1.1) — 300ms cubic-bezier(0.215, 0.61, 0.355, 1)
- `span.ScPlaceholderFill-sc-wb1` ×16 — transform translateX(-100%)→translateX(0%) — 2000ms ease-out (delay 300ms)
- `div.ScLoadingSpinner-sc-bvza` — opacity 0→1 — 150ms ease (delay 300ms)
- `div.ScLoadingSpinnerCircle-s` — transform rotate(0deg)→rotate(360deg) — 1000ms · loops
- overlay dialog (auto-opened): panel rgba(0, 0, 0, 0) · r 0px

Rebuild the timeline, not just the durations — order, delays and staggers above are the choreography.

## Components (measured)
- input: h 36px · r 8px 0px 0px 8px · bg #FFFFFF · placeholder rgba(0, 0, 0, 0.7)
  - focus ring: `rgb(119, 44, 232) 0px 0px 0px 2px, rgb(119, 44, 232) 0px 0px 0px 2px inset` — this exact construction, don't invent your own
- link: #FFFFFF · underline — hover rgba(255, 255, 255, 0.8)
- disabled: bg rgba(173, 173, 184, 0.22) · text #0E0E10

## Responsive (measured)
- breakpoints: 768px · 1440px
- mobile (390px): hero 18px · body 14px · nav: inline

## How to apply
Paste the Tailwind `@theme` (or CSS variables) as your base, then build each
section to its spec — verify every color, radius, and font against these tokens.
Hover/focus states, shadows and motion timings above are measured from the live page — match them exactly, don't re-guess them.

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> **Decoded with Mozaika** — measured live, not guessed. Full decoded design system + one-command install: mozaika.design/decode/twitch.tv

← All decoded design systems

An automated reading of Twitch Mobile's publicly-visible CSS (colors, fonts, spacing, motion) — not affiliated with twitch.tv. No screenshots stored. Removal requests: hello@mozaika.design.