Brex — Design System

Name: Brex design system
Creator: Mozaika
Keywords: design system, design tokens, Brex, light, custom

light · modern · high · custom · confidence 92%

Brex runs corporate finance in disciplined Inter: 72px/500 'Finance built for speed and control' in near-black #15191E, 20px standfirsts in grey, 10px-radius quiet buttons, and card products photographed like hardware. The restraint is deliberate — a fintech serving CFOs dresses in the typography of an audited financial statement.

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/brex.

Tokens

Brex's decoded design system: background #FFFFFF, text #15191E, accent #FF5900, link #FF6B18, primary #FF5900; type scale h1 72px / h2 20px / body 16px; 4px 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

Role	Value
bg	`#FFFFFF`
surface	`#F0F1F1`
border	`#DBDCDD`
text	`#15191E`
text_muted	`#6D7073`
primary	`#FF5900`
accent	`#FF5900`
link	`#FF6B18`
secondary	`#FF3D00`
button_bg	`#FF5900`
button_text	`#FCFCFD`

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 #FF6B18 — fails contrast on the background (~2.9:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
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: 20px
body: 16px

Spacing

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

Radii

base: 10px
button: 10px

Per-section tokens (11)

Export: DESIGN.md

# Brex — Design System

> light, modern, high, custom

Brex runs corporate finance in disciplined Inter: 72px/500 'Finance built for speed and control' in near-black #15191E, 20px standfirsts in grey, 10px-radius quiet buttons, and card products photographed like hardware. The restraint is deliberate — a fintech serving CFOs dresses in the typography of an audited financial statement.

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#F0F1F1` |
| border | `#DBDCDD` |
| text | `#15191E` |
| text_muted | `#6D7073` |
| primary | `#FF5900` |
| accent | `#FF5900` |
| link | `#FF6B18` |
| 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** `#FF6B18` — fails contrast on the background (~2.9:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
- **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: 20px
- body: 16px

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

## Spacing
- base unit: 4px
- scale: 2px, 4px, 6px, 8px, 12px, 16px, 24px, 32px

## Radius
- base: 10px
- button: 10px

## Primary button
- bg `#FF5900` · text `#FCFCFD` · radius 10px

## 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.

Export: Tailwind v4 (@theme)

@theme {
  /* action color #FF5900 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #FFFFFF;
  --color-surface: #F0F1F1;
  --color-border: #DBDCDD;
  --color-text: #15191E;
  --color-text-muted: #6D7073;
  --color-primary: #FF5900;  /* primary brand / action color. */
  --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. */
  --color-link: #FF6B18;  /* fails contrast on the background (~2.9:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference). */
  --color-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. */
  --color-button-bg: #FF5900;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FCFCFD;
  /* fonts: Inter — free, on Google. */
  --font-heading: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --text-h1: 72px;
  --text-h2: 20px;
  --text-body: 16px;
  --radius-base: 10px;
  --radius-button: 10px;
  --spacing-1: 2px;
  --spacing-2: 4px;
  --spacing-3: 6px;
  --spacing-4: 8px;
  --spacing-5: 12px;
  --spacing-6: 16px;
  --spacing-7: 24px;
  --spacing-8: 32px;
}

Export: CSS variables

:root {
  /* action color #FF5900 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #FFFFFF;
  --surface: #F0F1F1;
  --border: #DBDCDD;
  --text: #15191E;
  --text-muted: #6D7073;
  --primary: #FF5900;  /* primary brand / 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: #FF6B18;  /* fails contrast on the background (~2.9:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference). */
  --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. */
  --button-bg: #FF5900;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FCFCFD;
  --font-heading: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 10px;
  --radius-button: 10px;
}
/* fonts: Inter — free, on Google. */