SoundCloud Mobile — Design System

dark · consumer · high · confidence 85% · deep decode

SoundCloud Mobile — palette measured from official store listing screenshots (colors only; no font claims). Type scale shown is the platform HIG default.

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/ds/soundcloud-mobile.

Tokens

SoundCloud Mobile's decoded design system: background #121212, text #FFFFFF, accent #4D230D, link #4D230D, primary #4D230D; type scale h1 34px / h2 22px / body 17px; 8px spacing base; 12px base radius. The single interactive/action color is #4D230D — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #4D230D — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent, link, button_bg are all #4D230D — one role, not several (the action color).
• accent #4D230D — 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: 8px
• scale: 4px, 6px, 8px, 12px, 13px, 16px, 18px, 24px, 30px, 32px

Radii

• base: 12px
• button: 12px

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

Export: DESIGN.md

# SoundCloud Mobile — Design System

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

SoundCloud Mobile — palette measured from official store listing screenshots (colors only; no font claims). Type scale shown is the platform HIG default.

## Colors

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

**Using these colors**

- **Action color** `#4D230D` — 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`, `link`, `button_bg` are all `#4D230D` — one role, not several (your action color).
- **accent** `#4D230D` — 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.
- **Page coverage** (full-page screenshot pixels): `#4D6064` 29.1% · `#0B0A0A` 26.9% · `#F3F3F3` 23.9% · `#1E1E1C` 11.4%

## Typography


| 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.

## 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: 12px
- 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.

---

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

Export: Tailwind v4 (@theme)

@theme {
  /* action color #4D230D — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #121212;
  --color-surface: #202020;
  --color-border: #353535;
  --color-text: #FFFFFF;
  --color-text-muted: #A4A4A4;
  --color-primary: #4D230D;  /* primary brand / action color. */
  --color-accent: #4D230D;  /* 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. */
  --color-link: #4D230D;  /* inline text links — shares the action color. */
  --color-button-bg: #4D230D;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #121212;
  /* measured weights: 100, 400, 600, 700, 800 — use these, not 400/600 */
  --text-hero: 65px; --font-weight-hero: 800; --leading-hero: 55px; --tracking-hero: -1.3px;
  --text-h2: 28px; --font-weight-h2: 600; --leading-h2: 36px;
  --text-h3: 22px; --font-weight-h3: 600; --leading-h3: 28px;
  --text-body: 14px; --font-weight-body: 600; --leading-body: 20px;
  --radius-base: 12px;
  --radius-button: 12px;
  --radius-card: 4px;
  --radius-pill: 9999px;
  --radius-sharp: 2px;
  --shadow-focus: rgb(4, 77, 210) 0px 0px 0px 2px inset;  /* measured focus ring */
  --ease-brand: ease;
  --duration-fast: 100ms;  /* use: duration-[var(--duration-fast)] */
  --duration-base: 200ms;
  --duration-slow: 300ms;
  --spacing: 8px;  /* measured base — drives the p-*/gap-* scale. steps seen on the page: 4, 6, 8, 12, 13, 16, 18, 24, 30, 32px */
}

Export: CSS variables

:root {
  /* action color #4D230D — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #121212;
  --surface: #202020;
  --border: #353535;
  --text: #FFFFFF;
  --text-muted: #A4A4A4;
  --primary: #4D230D;  /* primary brand / action color. */
  --accent: #4D230D;  /* 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. */
  --link: #4D230D;  /* inline text links — shares the action color. */
  --button-bg: #4D230D;  /* primary-button fill — the main call-to-action color. */
  --button-text: #121212;
  --text-hero: 65px; --weight-hero: 800; --leading-hero: 55px; --tracking-hero: -1.3px;
  --text-h2: 28px; --weight-h2: 600; --leading-h2: 36px;
  --text-h3: 22px; --weight-h3: 600; --leading-h3: 28px;
  --text-body: 14px; --weight-body: 600; --leading-body: 20px;
  --radius: 12px;
  --radius-button: 12px;
  --radius-card: 4px;
  --radius-pill: 9999px;
  --radius-sharp: 2px;
  --focus-ring: rgb(4, 77, 210) 0px 0px 0px 2px inset;
  --ease: ease;
  --duration-fast: 100ms;
  --duration-base: 200ms;
  --duration-slow: 300ms;
}

/* their own tokens, verbatim from the site's :root */
:root {
  --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;
}