Brex — design system & UI screens

Fintech · 1 screen · 11 sections · brex.com

A corporate finance and expense management platform for businesses and accounting teams. The landing page uses a clean, hierarchical layout with a bold hero section stating "Finance built for speed and control," followed by trust indicators, product category cards (Corporate Card, Accounting Software, Billing, Banking), customer segment sections (Startups, Mid-size companies, Enterprises), and feature demonstrations with alternating text/image blocks showcasing spend control, expense management, and AI-powered accounting capabilities.

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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/website/brex.

Decoded design system

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

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: 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

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'`

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

Full design system, per-section tokens & DESIGN.md / Tailwind / CSS exports →

Screens

Finance platform landing page