Nubank Mobile — design system & UI screens

Fintech · 4 screens · nubank.com.br

Pix is a Brazilian instant payment system for sending and receiving money anytime, with no fees. This screen presents the primary payment methods within Área Pix: a segmented interface with two sections—"Enviar" (Send) and "Receber" (Receive)—each offering multiple action buttons displayed in circular icon containers with descriptive labels below.

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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/nubank-mobile.

Decoded design system

Nubank Mobile's decoded design system: background #FFFFFF, text #191919, accent #17C242, link #17C242, primary #17C242; type scale h1 34px / h2 22px / body 17px; 8px spacing base; 12px base radius. The single interactive/action color is #17C242 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#FFFFFF`
surface	`#F1F1F1`
border	`#DCDCDC`
text	`#191919`
text_muted	`#707070`
primary	`#17C242`
accent	`#17C242`
link	`#17C242`
button_bg	`#17C242`
button_text	`#FFFFFF`

Using these colors

Action color #17C242 — the single interactive color; only on things you click or must notice, never large fills.
primary, accent, link, button_bg are all #17C242 — one role, not several (the action color).
accent #17C242 — 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: 6px, 8px, 16px, 20px, 24px, 28px, 32px, 40px, 48px, 56px

Radii

base: 12px
button: 12px

Motion

Micro-interactions run at 1600ms (dominant) with ease-in-out.

durations: 1600ms · 150ms · 2500ms
easings: ease-in-out · ease-out
animated properties: opacity

Native design tokens

Token	Value
`--colors-content-primary`	`#1E002F`
`--colors-brand-uv-S1`	`#0B0019`
`--colors-secondary-amber-S2`	`#EFD49C`
`--colors-neutrals-almostWhite`	`#D4D4D8`
`--colors-content-button-negative-disabledLabel`	`rgba(255, 255, 255, 0.20)`
`--colors-content-button-primary-disabledStroke`	`rgba(255, 255, 255, 0.0)`
`--colors-feedback-blueStrong`	`#0968F6`
`--colors-secondary-spot-purple`	`#CBA5FD`
`--colors-content-button-secondary-activeStroke`	`#8D0DE3`
`--colors-brand-pj-T2`	`#A087AE`

…and 110 more measured on the page.

Button states (measured)

primary hover: background #5D0599
primary focus: border 1px solid rgb(141, 13, 227) · outline 2px solid rgb(141, 13, 227)

Layout (measured)

container max-width: 1260px
nav: 64px fixed
common grid: 12 columns

Motion choreography (measured)

Load order: div.css-12tw2yb → div.css-ehsg9o → circle.css-1jpki61 → div.css-l17lnj×2 → div.css-1hht2g1 → div.css-8au1kw

Scroll reveal: 3 elements rest at opacity 0, animate in over 1.6s ease-in-out.

Responsive (measured)

mobile (390px): hero 48px · nav inline

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