Monzo — decoded design system

monzo.com · light · modern · bootstrap · deep decode — measured live

Monzo'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/monzo.com.

Decoded design system

Monzo's decoded design system: background #FFFFFF, text #091723, accent #FF4F64, link #FFFFFF, primary #112231; type scale h1 61px / h2 49px / body 16px; 8px spacing base; 16px base radius. The single interactive/action color is #091723 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #091723 — the single interactive color; only on things you click or must notice, never large fills.
• accent #FF4F64 — accent for emphasis — keep it rare on the page.
• primary #112231 — a brand color — but the call-to-action uses #091723, not this.
• link #FFFFFF — fails contrast on the background (~1.0:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
• secondary #0000EE — 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: Monzo Sans Display
• Body: Monzo Sans Text
• h1: 61px
• h2: 49px
• body: 16px

Spacing

• base unit: 8px
• scale: 4px, 8px, 10px, 12px, 14px, 16px, 20px, 24px, 32px, 48px

Radii

• base: 16px
• button: 500px

Shadows (elevation)

• subtle: rgba(0, 0, 0, 0) 0px 1px 1px 0px
• overlay: rgba(0, 0, 0, 0.16) 0px 8px 32px 0px

Motion

Micro-interactions run at 200ms (dominant) with ease.

• durations: 200ms · 300ms · 350ms
• easings: ease · ease-out
• animated properties: background-color, transform, opacity, left

Native design tokens

Button states (measured)

• primary hover: border 1px solid rgb(44, 58, 67) · background #2C3A43

Layout (measured)

• container max-width: 1440px
• nav: 87px sticky
• common grid: 2 columns

Motion choreography (measured)

Load order: div.Swiper_slide__mEKTf×7 → div.PaymentCardFan_infoPanel×10 → div.FadeImage_image__Dmn7d → dialog.Dialog_Dialog__tJ9Sz

Scroll reveal: 7 elements rest at opacity 0, translateY(-45px), animate in over 0.2s linear.

Overlay recipe (measured)

dialog panel: #FFFFFF · radius 32px

Responsive (measured)

• breakpoints: 480px · 616px · 768px · 820px · 1024px · 1040px
• mobile (390px): nav hamburger

Install it

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

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

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

Export: DESIGN.md

# Monzo — Design System

> light, modern, medium, bootstrap — deep decode (measured live)

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#F0F1F1` |
| border | `#DADCDE` |
| text | `#091723` |
| text_muted | `#666F76` |
| primary | `#112231` |
| accent | `#FF4F64` |
| link | `#FFFFFF` |
| secondary | `#0000EE` |
| button_bg | `#091723` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#091723` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- **accent** `#FF4F64` — accent for emphasis — keep it rare on the page.
- **primary** `#112231` — a brand color — but the call-to-action uses #091723, not this.
- **link** `#FFFFFF` — fails contrast on the background (~1.0:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
- **secondary** `#0000EE` — 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): `#020408` 25.5% · `#FFFFFF` 13.9% · `#2C251E` 13.9% · `#B7B7B7` 13.7%

## Typography

- Heading: **Monzo Sans Display** _(free fallback: Newsreader)_
- Body: **Monzo Sans Text** _(free fallback: Newsreader)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 61px / 800 · lh 61px |
| h2 | 49px / 800 · lh 68px |
| h3 | 39px / 800 · lh 47px |
| body | 16px / 600 · lh 22px |

- Weight ladder: 400 · 600 · 700 · 800 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** Monzo Sans Display may be proprietary — safe free fallback: Newsreader (Google Fonts). Monzo Sans Text may be proprietary — safe free fallback: Newsreader (Google Fonts).

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 4px, 8px, 10px, 12px, 14px, 16px, 20px, 24px, 32px, 48px — snap all gaps/padding to these
- section rhythm: 64px top/bottom padding per section (measured)

## Radius
- base: 16px
- button: 500px
- card: 4px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#091723` / `#FFFFFF` | 1px solid rgb(9, 23, 35) | 500px | 12px 24px 12px 24px | 600 16px | none |
| secondary | `#FFFFFF` / `#091723` | 1px solid rgb(255, 255, 255) | 500px | 12px 24px 12px 24px | 600 16px | none |

**States (measured, not guessed)**

- primary hover: border `1px solid rgb(44, 58, 67)` · background `#2C3A43`
- transition: `background-color 0.2s ease`

## Shadows (elevation)
- subtle: `rgba(0, 0, 0, 0) 0px 1px 1px 0px`
- overlay: `rgba(0, 0, 0, 0.16) 0px 8px 32px 0px`

## Motion
- durations: 200ms (dominant) · 300ms · 350ms
- easings: `ease` (dominant) · `ease-out`
- animated properties: background-color, transform, opacity, left

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-stack-title` | `"MonzoSansDisplay",sans-serif` |
| `--font-stack-body` | `"MonzoSansText",sans-serif` |
| `--default-font-stack` | `"MonzoSansText",sans-serif` |

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

## Layout (measured)
- container max 1440px · common grid: 2-col
- nav: 87px sticky

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 87 | 892 | — | — | 24/64 | — |
| 979 | 1021 | — | — | 64/64 | — |
| 1043 | 893 | — | — | 0/0 | — |
| 2000 | 875 | — | — | 64/64 | — |
| 2064 | 747 | — | — | 0/0 | — |
| 2876 | 760 | 2 | — | 64/64 | — |
| 2940 | 632 | 2 | — | 0/0 | — |
| 3636 | 588 | 2 | — | 64/64 | — |

## Motion choreography (measured)
Load order: `div.Swiper_slide__mEKTf`×7 @0ms → `div.PaymentCardFan_infoPanel`×10 @208ms → `div.FadeImage_image__Dmn7d` @208ms → `dialog.Dialog_Dialog__tJ9Sz` @475ms
- `div.PaymentCardFan_infoPanel` — opacity 0→1 — 350ms ease-in-out
- `div.FadeImage_image__Dmn7d` — opacity 0→1 — 350ms ease-in-out
- scroll reveal: 7 elements rest at opacity 0, translateY(-45px), animate in over 0.2s linear (0 revealed during the drive).
- overlay dialog (auto-opened): panel #FFFFFF · r 32px · shadow rgba(0, 0, 0, 0.16) 0px 8px 32px 0px

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

## Components (measured)
- link: #FFFFFF · no underline

## Responsive (measured)
- breakpoints: 480px · 616px · 768px · 820px · 1024px · 1040px
- mobile (390px): 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.

← All decoded design systems

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