SoundCloud Mobile — decoded design system

soundcloud.com · dark · consumer · deep decode — measured live

SoundCloud 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/soundcloud.com.

Decoded design system

SoundCloud Mobile's decoded design system: background #121212, text #FFFFFF, accent #4D230D, link #999999, primary #4D230D; type scale h1 65px / h2 28px / body 14px; 8px spacing base; 12px base radius. The single interactive/action color is #FFFFFF — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #FFFFFF — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent are all #4D230D — one role, not several (the action color).
• accent #4D230D — accent for emphasis — keep it rare on the page.
• link #999999 — reads as a neutral UI color, not a link accent — verify against the reference (action = #FFFFFF).

Typography

• Heading: Söhne
• Body: Söhne
• h1: 65px
• h2: 28px
• body: 14px

Spacing

• base unit: 8px
• scale: 4px, 6px, 8px, 12px, 13px, 16px, 18px, 24px, 30px, 32px

Radii

• base: 12px
• button: 4px

Motion

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

• durations: 100ms · 200ms · 300ms
• easings: ease · linear
• animated properties: opacity, visibility, transform, background

Native design tokens

…and 110 more measured on the page.

Button states (measured)

• primary hover: color rgba(18, 18, 18, 0.4)
• primary focus: box-shadow rgb(4, 77, 210) 0px 0px 0px 2px inset

Layout (measured)

• container max-width: 1240px

Motion choreography (measured)

Load order: header.header → div.onetrust-pc-dark-filter → div.otFlat → span.sc-artwork×12 → div.frontHero__carousel → div.frontHero__carouselNavDo×2

Scroll reveal: 40 elements rest at opacity 0, animate in over 0.1s ease.

Input (measured)

height 36px · radius 3px

Responsive (measured)

• breakpoints: 1079px · 1239px
• mobile (390px): hero 28px · nav inline

Install it

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

npx shadcn add mozaika.design/r/decode/soundcloud.com

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

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

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

Export: DESIGN.md

# SoundCloud Mobile — Design System

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

## Colors

| Role | Value |
|------|-------|
| bg | `#121212` |
| surface | `#202020` |
| border | `#353535` |
| text | `#FFFFFF` |
| text_muted | `#A4A4A4` |
| primary | `#4D230D` |
| accent | `#4D230D` |
| link | `#999999` |
| button_bg | `#FFFFFF` |
| button_text | `#121212` |

**Using these colors**

- **Action color** `#FFFFFF` — 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 `#4D230D` — one role, not several.
- **accent** `#4D230D` — accent for emphasis — keep it rare on the page.
- **link** `#999999` — reads as a neutral UI color, not a link accent — verify against the reference (action = #FFFFFF).
- **Page coverage** (full-page screenshot pixels): `#4D6064` 29.1% · `#0B0A0A` 26.9% · `#F3F3F3` 23.9% · `#1E1E1C` 11.4%

## Typography

- Heading: **Söhne** _(free fallback: Inter)_
- Body: **Söhne** _(free fallback: Inter)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 65px / 800 · lh 55px · tracking -1.3px |
| h2 | 28px / 600 · lh 36px |
| h3 | 22px / 600 · lh 28px |
| body | 14px / 600 · lh 20px |

- Weight ladder: 100 · 400 · 600 · 700 · 800 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** Söhne is proprietary — closest free match: Inter (Google). Load Inter; keep Söhne first so licensed users still get it.

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 4px, 6px, 8px, 12px, 13px, 16px, 18px, 24px, 30px, 32px — snap all gaps/padding to these

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

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#FFFFFF` / `#121212` | none | 4px | 6px 12px 6px 12px | 600 14px | none |

**States (measured, not guessed)**

- primary hover: color `rgba(18, 18, 18, 0.4)`
- primary focus: box-shadow `rgb(4, 77, 210) 0px 0px 0px 2px inset`
- transition: `opacity 0.2s linear`

## Motion
- durations: 100ms (dominant) · 200ms · 300ms
- easings: `ease` (dominant) · `linear`
- animated properties: opacity, visibility, transform, background

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 |
|-------|-------|
| `--white-color` | `#fff` |
| `--button-secondary-active-font-color` | `#121212` |
| `--support-bg-color` | `#558b2f` |
| `--button-primary-background-color` | `#121212` |
| `--button-tertiary-disabled-font-color` | `#121212` |
| `--success-color` | `#008850` |
| `--link-secondary-hover-color` | `hsla(0,0%,40%,0.4)` |
| `--input-invalid-background-color` | `#f3f3f3` |
| `--button-primary-loading-background-color` | `#121212` |
| `--artist-color` | `#5a45fd` |
| `--success-surface-color` | `#e6f7ee` |
| `--button-light-font-color` | `#121212` |

_…and 108 more measured on the page._

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

## Layout (measured)
- container max 1240px
- nav: 0px fixed · bg #121212

## Motion choreography (measured)
Load order: `header.header` @0ms → `div.onetrust-pc-dark-filter` @678ms → `div.otFlat` @678ms → `span.sc-artwork`×12 @877ms → `div.frontHero__carousel` @3797ms → `div.frontHero__carouselNavDo`×2 @3797ms
- scroll reveal: 40 elements rest at opacity 0, animate in over 0.1s ease (0 revealed during the drive).

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

## Components (measured)
- input: h 36px · r 3px · border 1px solid rgba(0, 0, 0, 0) · bg #303030 · placeholder #999999

## Responsive (measured)
- breakpoints: 1079px · 1239px
- mobile (390px): hero 28px · 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/soundcloud.com

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