Signal Mobile — decoded design system

signal.org · dark · consumer · deep decode — measured live

Signal 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/signal.org.

Decoded design system

Signal Mobile's decoded design system: background #000000, text #1B1B1B, accent #2267F5, link #E9E9E9, primary #2267F5; type scale h1 60px / h2 40px / body 20px; 6px 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 #2267F5 — one role, not several (the action color).
• accent #2267F5 — accent for emphasis — keep it rare on the page.
• link #E9E9E9 — reads as a neutral UI color, not a link accent — verify against the reference (action = #FFFFFF).

Typography

• Heading: Inter
• Body: Inter
• h1: 60px
• h2: 40px
• body: 20px

Spacing

• base unit: 6px
• scale: 8px, 9px, 12px, 16px, 19px, 20px, 24px, 30px, 48px, 96px

Radii

• base: 12px
• button: 8px

Shadow

rgba(51, 51, 51, 0.05) 0px 1.25px 2.5px 0px, rgba(51, 51, 51, 0.05) 0px 2.5px 5px 0px

Shadows (elevation)

• subtle: rgba(51, 51, 51, 0.05) 0px 1.25px 2.5px 0px, rgba(51, 51, 51, 0.05) 0px 2.5px 5px 0px
• card: rgba(0, 0, 0, 0.12) 0px 4px 12px 0px, rgba(0, 0, 0, 0.08) 0px 0px 2px 0px

Motion

Micro-interactions run at 294ms (dominant) with ease.

• durations: 294ms
• easings: ease
• animated properties: color, background-color, border-color, box-shadow

Native design tokens

…and 110 more measured on the page.

Button states (measured)

• primary hover: color #1851B4
• primary focus: box-shadow rgba(66, 88, 255, 0.25) 0px 0px 0px 3.75px

Layout (measured)

• container max-width: 1344px
• nav: 85px fixed
• common grid: 2 columns

Responsive (measured)

• breakpoints: 768px · 1024px
• mobile (390px): hero 40px · nav hamburger

Install it

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

npx shadcn add mozaika.design/r/decode/signal.org

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

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

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

Export: DESIGN.md

# Signal Mobile — Design System

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

## Colors

| Role | Value |
|------|-------|
| bg | `#000000` |
| surface | `#010101` |
| border | `#040404` |
| text | `#1B1B1B` |
| text_muted | `#101010` |
| primary | `#2267F5` |
| accent | `#2267F5` |
| link | `#E9E9E9` |
| button_bg | `#FFFFFF` |
| button_text | `#2C6BED` |

**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 `#2267F5` — one role, not several.
- **accent** `#2267F5` — accent for emphasis — keep it rare on the page.
- **link** `#E9E9E9` — reads as a neutral UI color, not a link accent — verify against the reference (action = #FFFFFF).
- **Page coverage** (full-page screenshot pixels): `#9DBBF8` 49.4% · `#FFFFFF` 22.9% · `#19191B` 16.9% · `#70718A` 6.6%

## Typography

- Heading: **Inter**
- Body: **Inter**

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 60px / 800 · lh 64px |
| h2 | 40px / 800 · lh 44px |
| h3 | 28px / 800 · lh 32px |
| body | 20px / 400 · lh 28px |
| small | 16px / 400 · lh 22px |

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

> **Fonts —** Inter — free, on Google.

## Spacing
- base unit: 6px (inferred from the measured scale)
- measured scale: 8px, 9px, 12px, 16px, 19px, 20px, 24px, 30px, 48px, 96px — snap all gaps/padding to these
- section rhythm: 48px top/bottom padding per section (measured)

## Radius
- base: 12px
- button: 8px
- card: 16px
- pill: 9999px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#FFFFFF` / `#2C6BED` | none | 8px | 0px 20px 0px 20px | 600 20px | rgba(51, 51, 51, 0.05) 0px 1.25px 2.5px 0px, rgba(51, 51, 51, 0.05) 0px 2.5px 5px 0px |
| secondary | `rgba(255, 255, 255, 0)` / `#1B1B1B` | none | — | 8px 12px 8px 12px | 400 16px | none |

**States (measured, not guessed)**

- primary hover: color `#1851B4`
- primary focus: box-shadow `rgba(66, 88, 255, 0.25) 0px 0px 0px 3.75px`
- secondary hover: background `rgba(0, 0, 0, 0)` · color `#2C6BED`
- transition: `background-color 0.294s ease`

## Shadows (elevation)
- subtle: `rgba(51, 51, 51, 0.05) 0px 1.25px 2.5px 0px, rgba(51, 51, 51, 0.05) 0px 2.5px 5px 0px`
- card: `rgba(0, 0, 0, 0.12) 0px 4px 12px 0px, rgba(0, 0, 0, 0.08) 0px 0px 2px 0px`
- button: `rgba(51, 51, 51, 0.05) 0px 1.25px 2.5px 0px, rgba(51, 51, 51, 0.05) 0px 2.5px 5px 0px`

## Motion
- durations: 294ms (dominant)
- easings: `ease` (dominant)
- animated properties: color, background-color, border-color, box-shadow

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 |
|-------|-------|
| `--bulma-arrow-color` | `hsl(233deg,100%,63%)` |
| `--bulma-loading-color` | `hsl(221,14%,86%)` |
| `--bulma-white` | `hsla(221deg,14%,100%,1)` |
| `--bulma-white-base` | `hsla(221deg,14%,100%,1)` |
| `--bulma-white-invert` | `#090a0c` |
| `--bulma-white-on-scheme` | `hsla(221deg,14%,35%,1)` |
| `--bulma-black` | `hsla(221deg,14%,4%,1)` |
| `--bulma-black-base` | `hsla(221deg,14%,4%,1)` |
| `--bulma-black-invert` | `#fff` |
| `--bulma-black-on-scheme` | `hsla(221deg,14%,4%,1)` |
| `--bulma-light` | `hsla(221deg,14%,96%,1)` |
| `--bulma-light-base` | `hsla(221deg,14%,96%,1)` |

_…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 1344px · common grid: 2-col
- nav: 85px fixed · border-bottom 1px solid rgb(235, 234, 235) · bg #FFFFFF

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 85 | 680 | — | — | 0/0 | — |
| 829 | 184 | — | — | 48/48 | — |
| 1013 | 764 | 2 | — | 48/48 | 67/33 |
| 1777 | 1190 | 2 | — | 48/48 | — |
| 2967 | 635 | 2 | — | 48/48 | 67/33 |
| 3602 | 635 | 2 | — | 48/48 | 33/67 |

## Components (measured)
- link: #2C6BED · no underline — hover #1851B4

## Responsive (measured)
- breakpoints: 768px · 1024px
- mobile (390px): hero 40px · body 16px · nav: hamburger

## 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/signal.org

← All decoded design systems

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