Resend — design system & UI screens

Dev Tools · 4 screens · 17 sections · resend.com

The email API for developers.

This is a static, crawlable rendering for search & AI engines. The interactive version — filters, live decode console, copy & export — is at https://mozaika.design/product/resend.

Decoded design system

Resend's decoded design system: background #000000, text #FFFFFF, accent #00A3FF, link #3B9EFF, primary #00A3FF; type scale h1 96px / h2 56px / body 14px; 4px spacing base; 4px base radius. The single interactive/action color is #00A3FF — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#000000`
surface	`#0F0F0F`
border	`#262626`
text	`#FFFFFF`
text_muted	`#9E9E9E`
primary	`#00A3FF`
accent	`#00A3FF`
link	`#3B9EFF`
secondary	`#4983C2`
button_bg	`#00A3FF`
button_text	`#FFFFFF`

Using these colors

Action color #00A3FF — the single interactive color; only on things you click or must notice, never large fills.
primary, accent, button_bg are all #00A3FF — one role, not several (the action color).
accent #00A3FF — 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 #3B9EFF — inline text links and link-styled controls.
secondary #4983C2 — 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: Domaine Display
Body: Inter
Mono: commitMono
h1: 96px
h2: 56px
body: 14px

Spacing

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

Radii

base: 4px
button: 4px

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