Bluesky Mobile — decoded design system

bsky.app · light · consumer · deep decode — measured live

Bluesky 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/bsky.app.

Decoded design system

Bluesky Mobile's decoded design system: background #FFFFFF, text #000000, accent #006AFF, link #405168, primary #006AFF; type scale h1 30px / h2 24px / body 15px; 8px spacing base; 12px base radius. The single interactive/action color is #006AFF — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #006AFF — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent, button_bg are all #006AFF — one role, not several (the action color).
• accent #006AFF — 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 #405168 — inline text links and link-styled controls.

Typography

• Heading: InterVariable
• Body: InterVariable
• h1: 30px
• h2: 24px
• body: 15px

Spacing

• base unit: 8px
• scale: 2px, 4px, 5px, 8px, 10px, 12px, 14px, 15px, 16px, 20px

Radii

• base: 12px
• button: 9999px

Motion

Micro-interactions run at 100ms (dominant) with cubic-bezier(0.17, 0.73, 0.14, 1).

• durations: 100ms · 200ms · 150ms
• easings: cubic-bezier(0.17, 0.73, 0.14, 1) · ease-out
• animated properties: opacity, transform

Native design tokens

Layout (measured)

• nav: 234px fixed

Motion choreography (measured)

Load order: div.css-g5y9jx×2 → div.css-g5y9jx → div.css-g5y9jx

Scroll reveal: 9 elements rest at opacity 0, animate in over 0.1s cubic-bezier(0.17, 0.73, 0.14, 1).

Input (measured)

height 40px · radius 0px

Themes

dark counterpart: background #151D28, text #FFFFFF.

Responsive (measured)

• 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/bsky.app

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

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

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

Export: DESIGN.md

# Bluesky Mobile — Design System

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

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#EFEFEF` |
| border | `#D8D8D8` |
| text | `#000000` |
| text_muted | `#606060` |
| primary | `#006AFF` |
| accent | `#006AFF` |
| link | `#405168` |
| button_bg | `#006AFF` |
| button_text | `#000000` |

**Using these colors**

- **Action color** `#006AFF` — 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 `#006AFF` — one role, not several (your action color).
- **accent** `#006AFF` — 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** `#405168` — inline text links and link-styled controls.
- **Page coverage** (full-page screenshot pixels): `#CCCCCC` 58.1% · `#F2F2F2` 19.9% · `#B8DDF2` 8% · `#D6E5EF` 7%

## Typography

- Heading: **InterVariable** _(free fallback: Newsreader)_
- Body: **InterVariable** _(free fallback: Newsreader)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 30px / 600 · lh 36px · tracking -0.5px |
| h2 | 24px / 700 · lh 24px |
| h3 | 21px / 600 · lh 27px · tracking -0.5px |
| body | 15px / 400 · lh 17px |
| small | 13px / 400 · lh 17px |

- Weight ladder: 400 · 500 · 600 · 700 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** InterVariable may be proprietary — safe free fallback: Newsreader (Google Fonts).

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 2px, 4px, 5px, 8px, 10px, 12px, 14px, 15px, 16px, 20px — snap all gaps/padding to these

## Radius
- base: 12px
- button: 9999px
- card: 12px
- pill: 9999px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#006AFF` / `#000000` | none | 9999px | 8px 14px 8px 14px | 400 16px | none |
| secondary | `rgba(0, 0, 0, 0)` / `#000000` | none | 9999px | 12px 24px 12px 24px | 400 16px | none |

**States (measured, not guessed)**

- secondary hover: outline `1px auto rgb(16, 16, 16)`

## Motion
- durations: 100ms (dominant) · 200ms · 150ms
- easings: `cubic-bezier(0.17, 0.73, 0.14, 1)` (dominant) · `ease-out`
- animated properties: opacity, transform

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 |
|-------|-------|
| `--backgroundLight` | `#DCE2EA` |
| `--rc-border-color` | `#ffffffb3` |
| `--rc-drag-handle-bg-colour` | `#0003` |
| `--rc-focus-color` | `#08f` |
| `--rc-drag-handle-size` | `12px` |
| `--rc-drag-bar-size` | `6px` |
| `--rc-drag-handle-mobile-size` | `24px` |

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

## Layout (measured)
- nav: 234px fixed

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 0 | 900 | — | — | 0/0 | — |

## Motion choreography (measured)
Load order: `div.css-g5y9jx`×2 @0ms → `div.css-g5y9jx` @407ms → `div.css-g5y9jx` @407ms
- `div.css-g5y9jx` — transform rotate(0deg)→rotate(360deg) — 750ms · loops
- scroll reveal: 9 elements rest at opacity 0, animate in over 0.1s cubic-bezier(0.17, 0.73, 0.14, 1) (0 revealed during the drive).

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

## Components (measured)
- input: h 40px · r 0px · bg rgba(0, 0, 0, 0) · placeholder #667B99
- link: #006AFF · no underline

## Themes (both measured)
- dark counterpart: bg `#151D28` · text `#FFFFFF`
- tokens that flip between modes:
  - `--backgroundLight`: `#DCE2EA` → `#2C3A4E`

## Responsive (measured)
- mobile (390px): body 16px · 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/decode/bsky.app

← All decoded design systems

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