Monzo Mobile — Design System

light · consumer · high · confidence 85% · deep decode

Monzo Mobile — palette measured from official store listing screenshots (colors only; no font claims). Type scale shown is the platform HIG default.

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/monzo-mobile.

Tokens

Monzo Mobile's decoded design system: background #FFFFFF, text #000000, accent #FF3831, link #FF3831, primary #FF3831; type scale h1 34px / h2 22px / body 17px; 8px spacing base; 12px base radius. The single interactive/action color is #FF3831 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #FF3831 — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent, link, button_bg are all #FF3831 — one role, not several (the action color).
• accent #FF3831 — 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.

Typography

• h1: 34px
• h2: 22px
• body: 17px

Spacing

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

Radii

• base: 12px
• button: 12px

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

Export: DESIGN.md

# Monzo Mobile — Design System

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

Monzo Mobile — palette measured from official store listing screenshots (colors only; no font claims). Type scale shown is the platform HIG default.

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#EFEFEF` |
| border | `#D8D8D8` |
| text | `#000000` |
| text_muted | `#606060` |
| primary | `#FF3831` |
| accent | `#FF3831` |
| link | `#FF3831` |
| button_bg | `#FF3831` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#FF3831` — 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`, `link`, `button_bg` are all `#FF3831` — one role, not several (your action color).
- **accent** `#FF3831` — 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.
- **Page coverage** (full-page screenshot pixels): `#020408` 25.5% · `#FFFFFF` 13.9% · `#2C251E` 13.9% · `#B7B7B7` 13.7%

## Typography


| 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.

## 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: 12px
- button: 12px
- 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 @361ms → `div.FadeImage_image__Dmn7d` @361ms → `dialog.Dialog_Dialog__tJ9Sz` @503ms
- `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.

---

> **Decoded with Mozaika** — measured live, not guessed. Full decoded design system + one-command install: mozaika.design/ds/monzo-mobile

Export: Tailwind v4 (@theme)

@theme {
  /* action color #FF3831 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #FFFFFF;
  --color-surface: #EFEFEF;
  --color-border: #D8D8D8;
  --color-text: #000000;
  --color-text-muted: #606060;
  --color-primary: #FF3831;  /* primary brand / action color. */
  --color-accent: #FF3831;  /* 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: #FF3831;  /* inline text links — shares the action color. */
  --color-button-bg: #FF3831;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FFFFFF;
  /* measured weights: 400, 600, 700, 800 — use these, not 400/600 */
  --text-hero: 61px; --font-weight-hero: 800; --leading-hero: 61px;
  --text-h2: 49px; --font-weight-h2: 800; --leading-h2: 68px;
  --text-h3: 39px; --font-weight-h3: 800; --leading-h3: 47px;
  --text-body: 16px; --font-weight-body: 600; --leading-body: 22px;
  --radius-base: 12px;
  --radius-button: 12px;
  --radius-card: 4px;
  --shadow-overlay: rgba(0, 0, 0, 0.16) 0px 8px 32px 0px;
  --shadow-subtle: rgba(0, 0, 0, 0) 0px 1px 1px 0px;
  --color-btn-hover: #2C3A43;  /* measured primary hover fill */
  --ease-brand: ease;
  --duration-fast: 200ms;  /* use: duration-[var(--duration-fast)] */
  --duration-base: 300ms;
  --duration-slow: 350ms;
  --section-y: 64px;  /* per-section vertical padding (measured) */
  --spacing: 8px;  /* measured base — drives the p-*/gap-* scale. steps seen on the page: 4, 8, 10, 12, 14, 16, 20, 24, 32, 48px */
}

Export: CSS variables

:root {
  /* action color #FF3831 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #FFFFFF;
  --surface: #EFEFEF;
  --border: #D8D8D8;
  --text: #000000;
  --text-muted: #606060;
  --primary: #FF3831;  /* primary brand / action color. */
  --accent: #FF3831;  /* 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: #FF3831;  /* inline text links — shares the action color. */
  --button-bg: #FF3831;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FFFFFF;
  --text-hero: 61px; --weight-hero: 800; --leading-hero: 61px;
  --text-h2: 49px; --weight-h2: 800; --leading-h2: 68px;
  --text-h3: 39px; --weight-h3: 800; --leading-h3: 47px;
  --text-body: 16px; --weight-body: 600; --leading-body: 22px;
  --radius: 12px;
  --radius-button: 12px;
  --radius-card: 4px;
  --shadow-overlay: rgba(0, 0, 0, 0.16) 0px 8px 32px 0px;
  --shadow-subtle: rgba(0, 0, 0, 0) 0px 1px 1px 0px;
  --btn-bg-hover: #2C3A43;
  --ease: ease;
  --duration-fast: 200ms;
  --duration-base: 300ms;
  --duration-slow: 350ms;
  --section-y: 64px;
}

/* their own tokens, verbatim from the site's :root */
:root {
  --font-stack-title: "MonzoSansDisplay",sans-serif;
  --font-stack-body: "MonzoSansText",sans-serif;
  --default-font-stack: "MonzoSansText",sans-serif;
}