Brex — decoded design system

brex.com · light · modern · custom · deep decode — measured live

Brex'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/brex.com.

Decoded design system

Brex's decoded design system: background #FFFFFF, text #000000, accent #FF5900, link #8B8D98, primary #FF5900; type scale h1 72px / h2 48px / body 16px; 8px spacing base; 10px base radius. The single interactive/action color is #FF5900 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #FF5900 — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent, button_bg are all #FF5900 — one role, not several (the action color).
• accent #FF5900 — 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 #8B8D98 — reads as a neutral UI color, not a link accent — verify against the reference (action = #FF5900).
• secondary #FF3D00 — optional secondary accent — LOW decode confidence; use rarely (a status color or a single decorative moment) or omit it entirely. Prefer one accent unless the reference clearly shows two.

Typography

• Heading: Inter
• Body: Inter
• h1: 72px
• h2: 48px
• body: 16px

Spacing

• base unit: 8px
• scale: 2px, 4px, 6px, 8px, 12px, 16px, 20px, 24px, 32px, 48px

Radii

• base: 10px
• button: 10px

Shadows (elevation)

• subtle: rgba(66, 87, 138, 0.15) 0px 1px 0px 0px
• card: rgba(0, 0, 0, 0.04) 0px 1px 1px 0px

Motion

Micro-interactions run at 500ms (dominant) with ease-in-out.

• durations: 500ms · 125ms · 200ms
• easings: ease-in-out · linear
• animated properties: box-shadow, border, border-color, undefined

Native design tokens

Button states (measured)

• primary hover: border 1px solid rgb(255, 106, 23) · background #FF6A17
• primary focus: background #FF6B18 · outline 1px solid rgb(255, 89, 1)

Layout (measured)

• container max-width: 1300px
• nav: 60px
• common grid: 3 columns

Input (measured)

height 36px · radius 0px

Responsive (measured)

• mobile (390px): hero 36px · nav hamburger

Install it

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

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

registry item · or query it over MCP: get_design_system("Brex")

Export: DESIGN.md

# Brex — Design System

> light, modern, high, custom — deep decode (measured live)

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#EFEFEF` |
| border | `#D8D8D8` |
| text | `#000000` |
| text_muted | `#606060` |
| primary | `#FF5900` |
| accent | `#FF5900` |
| link | `#8B8D98` |
| secondary | `#FF3D00` |
| button_bg | `#FF5900` |
| button_text | `#FCFCFD` |

**Using these colors**

- **Action color** `#FF5900` — 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 `#FF5900` — one role, not several (your action color).
- **accent** `#FF5900` — 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** `#8B8D98` — reads as a neutral UI color, not a link accent — verify against the reference (action = #FF5900).
- **secondary** `#FF3D00` — optional secondary accent — LOW decode confidence; use rarely (a status color or a single decorative moment) or omit it entirely. Prefer one accent unless the reference clearly shows two.
- **Page coverage** (full-page screenshot pixels): `#F9F9F9` 73.9% · `#E6E5E4` 10.9% · `#0C1016` 9.9% · `#A4938C` 5.3%

## Typography

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

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 72px / 500 · lh 72px · tracking -1.44px |
| h2 | 48px / 500 · lh 48px · tracking -0.96px |
| h3 | 36px / 500 · lh 36px · tracking -0.72px |
| body | 16px / 400 · lh 24px · tracking -0.32px |
| small | 14px / 500 · lh 21px · tracking -0.28px |

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

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

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 2px, 4px, 6px, 8px, 12px, 16px, 20px, 24px, 32px, 48px — snap all gaps/padding to these
- section rhythm: 48px top/bottom padding per section (measured)

## Radius
- base: 10px
- button: 10px
- card: 12px
- sharp: 3px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#FF5900` / `#FCFCFD` | 1px solid rgb(255, 89, 0) | 10px | 0px 12px 0px 12px | 400 14px | none |
| secondary | `rgba(0, 0, 0, 0)` / `#15191E` | 1px solid rgba(0, 0, 0, 0) | 10px | 4px 8px 4px 8px | 600 14px / -0.14px | none |

**States (measured, not guessed)**

- primary hover: border `1px solid rgb(255, 106, 23)` · background `#FF6A17`
- primary focus: background `#FF6B18` · outline `1px solid rgb(255, 89, 1)`
- transition: `all 0.5s ease`

## Shadows (elevation)
- subtle: `rgba(66, 87, 138, 0.15) 0px 1px 0px 0px`
- card: `rgba(0, 0, 0, 0.04) 0px 1px 1px 0px`

## Motion
- durations: 500ms (dominant) · 125ms · 200ms
- easings: `ease-in-out` (dominant) · `linear`
- animated properties: box-shadow, border, border-color, undefined

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 |
|-------|-------|
| `--font-inter` | `'inter', 'inter Fallback'` |
| `--font-flecha` | `'flecha', 'flecha Fallback'` |
| `--font-bronzea` | `'bronzea', 'bronzea Fallback'` |
| `--font-space-mono` | `'Space Mono', 'Space Mono Fallback'` |

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

## Layout (measured)
- container max 1300px · common grid: 3-col
- nav: 60px

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 1078 | 208 | — | — | 32/80 | — |
| 1286 | 176 | — | — | 48/16 | — |
| 1462 | 452 | — | — | 48/80 | — |
| 2042 | 545 | 3 | 24 | 48/80 | — |
| 2739 | 486 | — | — | 80/48 | — |
| 3225 | 486 | — | — | 80/48 | — |
| 3710 | 430 | — | — | 24/48 | — |
| 4140 | 470 | — | — | 48/48 | — |

## Components (measured)
- input: h 36px · r 0px · bg rgba(0, 0, 0, 0) · placeholder #6F737B
- link: #FCFCFD · no underline

## Responsive (measured)
- mobile (390px): hero 36px · 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.

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