SHEIN Mobile — decoded design system

shein.com · light · consumer · deep decode — measured live

SHEIN 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.

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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/decode/shein.com.

Decoded design system

SHEIN Mobile's decoded design system: background #FFFFFF, text #222222, accent #F8CD1F, link #666666, primary #F8CD1F; type scale h1 24px / h2 16px / body 12px; 8px spacing base; 12px base radius. The single interactive/action color is #F8CD1F — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #F8CD1F — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent, button_bg are all #F8CD1F — one role, not several (the action color).
• accent #F8CD1F — 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 #666666 — reads as a neutral UI color, not a link accent — verify against the reference (action = #F8CD1F).

Typography

• Heading: -apple-system
• Body: Arial
• h1: 24px
• h2: 16px
• body: 12px

Spacing

• base unit: 8px
• scale: 2px, 4px, 5px, 8px, 10px, 11px, 12px, 16px, 24px, 60px

Radii

• base: 12px
• button: 0px

Shadows (elevation)

• subtle: rgba(0, 0, 0, 0.08) -2px 0px 3px 0px
• card: rgba(0, 0, 0, 0.3) 0px 0px 10px 0px

Motion

Micro-interactions run at 200ms (dominant) with ease.

• durations: 200ms · 500ms · 300ms
• easings: ease
• animated properties: opacity, transform, background, border-color

Native design tokens

…and 12 more measured on the page.

Button states (measured)

• primary hover: background rgba(0, 0, 0, 0.08)
• primary focus: box-shadow rgba(255, 255, 255, 0.8) 0px 0px 0px 4px, rgba(0, 0, 0, 0.3) 0px 0px 0px 5px · background rgba(0, 0, 0, 0.08) · outline 2px solid rgb(0, 0, 0)

Layout (measured)

• container max-width: 1446px

Input (measured)

height 36px · radius 0px

Responsive (measured)

• breakpoints: 800px
• mobile (390px): nav inline

Install it

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

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

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

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

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

Export: DESIGN.md

# SHEIN Mobile — Design System

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

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#F1F1F1` |
| border | `#DDDDDD` |
| text | `#222222` |
| text_muted | `#757575` |
| primary | `#F8CD1F` |
| accent | `#F8CD1F` |
| link | `#666666` |
| button_bg | `#F8CD1F` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#F8CD1F` — 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`, `button_bg` are all `#F8CD1F` — one role, not several (your action color).
- **accent** `#F8CD1F` — 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** `#666666` — reads as a neutral UI color, not a link accent — verify against the reference (action = #F8CD1F).
- **Page coverage** (full-page screenshot pixels): `#F6F6F6` 57.8% · `#3B3029` 18.9% · `#97B2B3` 15.5% · `#D9D0C6` 7.8%

## Typography

- Heading: **-apple-system**
- Body: **Arial**

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 24px / 700 · lh 28px |
| h2 | 16px / 400 · lh 23px |
| body | 12px / 400 · lh 23px |

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

> **Fonts —** -apple-system — system font, no web load needed. Arial — system font, no web load needed.

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 2px, 4px, 5px, 8px, 10px, 11px, 12px, 16px, 24px, 60px — snap all gaps/padding to these

## Radius
- base: 12px
- button: 0px
- card: 50px
- sharp: 2px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `rgba(0, 0, 0, 0)` / `#FFFFFF` | none | 0px | 0px 10px 0px 10px | 400 13px | none |

**States (measured, not guessed)**

- primary hover: background `rgba(0, 0, 0, 0.08)`
- primary focus: box-shadow `rgba(255, 255, 255, 0.8) 0px 0px 0px 4px, rgba(0, 0, 0, 0.3) 0px 0px 0px 5px` · background `rgba(0, 0, 0, 0.08)` · outline `2px solid rgb(0, 0, 0)`

## Shadows (elevation)
- subtle: `rgba(0, 0, 0, 0.08) -2px 0px 3px 0px`
- card: `rgba(0, 0, 0, 0.3) 0px 0px 10px 0px`

## Motion
- durations: 200ms (dominant) · 500ms · 300ms
- easings: `ease` (dominant)
- animated properties: opacity, transform, background, border-color

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_promo_primary` | `#F93A00` |
| `--color_promo_base` | `#FC4812` |
| `--color_promo_elevated` | `#FF6233` |
| `--color_promo_light` | `#FFF1EB` |
| `--color_promo_overlay_primary` | `rgba(255, 72, 18, 0.9)` |
| `--color_promo_border_light` | `rgba(255, 72, 18, 0.4)` |
| `--color_promo_border_soft` | `rgba(252, 72, 18, 0.2)` |
| `--color_safety_primary` | `#007D49` |
| `--color_safety_base` | `#008C52` |
| `--color_safety_elevated` | `#00B86B` |
| `--color_safety_light` | `#E6FAF0` |
| `--color_safety_border_light` | `rgba(0, 140, 82, 0.4)` |

_…and 10 more measured on the page._

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

## Layout (measured)
- container max 1446px
- nav: 0px

## Components (measured)
- input: h 36px · r 0px · border 1px solid rgb(204, 204, 204) · bg #FFFFFF · placeholder #BBBBBB
- link: #666666 · no underline — hover #222222
- disabled: bg rgba(0, 0, 0, 0) · text #FFFFFF

## Responsive (measured)
- breakpoints: 800px
- mobile (390px): body 12px · 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/shein.com

Measured changes over time

• 2026-07-22: colors.text #000000→#222222, colors.link #F8CD1F→#666666, primary_button.bg #F8CD1F→rgba(0, 0, 0, 0), primary_button.radius 12px→0px

← All decoded design systems

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