Devin design system

---
version: alpha
name: Devin
description: "Light interface measured from devin.ai: nbInternationalPro type with inter, vivid blue accents, tonal surfaces and 6px corners."
colors:
  background: "#F8F8F8"
  surface: "#F8F8F8"
  on-surface: "#191919"
  on-background: "#191919"
  on-surface-strong: "#000000"
  surface-container-low: "#FCFCFC"
  overlay: "#0000000A"
  outline: "#0000000F"
  outline-variant: "#00000014"
  primary: "#317CFF"
  on-primary: "#000000"
  secondary: "#39BDD6"
  tertiary: "#4991E5"
  success: "#00A558"
  error: "#F53B3A"
  warning: "#FFBB00"
typography:
  headline-display:
    fontFamily: nbInternationalPro
    fontSize: 40px
    fontWeight: 400
    lineHeight: 1.04
    letterSpacing: -0.03em
  headline-lg:
    fontFamily: nbInternationalPro
    fontSize: 32px
    fontWeight: 400
    lineHeight: 1.2
    letterSpacing: -0.02em
  headline-md:
    fontFamily: inter
    fontSize: 22px
    fontWeight: 600
    lineHeight: 1.27
    letterSpacing: -0.015em
  headline-sm:
    fontFamily: nbInternationalPro
    fontSize: 20px
    fontWeight: 400
    lineHeight: 1.2
    letterSpacing: -0.01em
  body-md:
    fontFamily: nbInternationalPro
    fontSize: 16px
    fontWeight: 400
    lineHeight: 1.5
  body-sm:
    fontFamily: inter
    fontSize: 12px
    fontWeight: 400
    lineHeight: 1.33
  label-lg:
    fontFamily: nbInternationalPro
    fontSize: 14px
    fontWeight: 400
    lineHeight: 1.4
  label-md:
    fontFamily: inter
    fontSize: 13px
    fontWeight: 500
    lineHeight: 1.38
    letterSpacing: -0.005em
  label-sm:
    fontFamily: inter
    fontSize: 12px
    fontWeight: 500
    lineHeight: 1.33
  headline-display-mobile:
    fontFamily: nbInternationalPro
    fontSize: 32px
    fontWeight: 400
    lineHeight: 1.04
    letterSpacing: -0.03em
rounded:
  sm: 6px
  md: 20px
  lg: 200px
spacing:
  base: 4px
  xs: 4px
  sm: 8px
  md: 16px
  lg: 20px
  xl: 36px
  gutter: 36px
  section: 140px
  margin: 60px
  container: 1400px
components:
  button-primary:
    backgroundColor: "{colors.on-surface-strong}"
    textColor: "#FFFFFF"
    typography: "{typography.label-lg}"
    padding: 0px 12px 1px 12px
    height: 28px
  button-ghost:
    textColor: "{colors.on-surface-strong}"
    typography: "{typography.label-lg}"
    rounded: "{rounded.lg}"
    padding: 1px 8px 0px 12px
  link:
    textColor: "#19191966"
---

# Devin Design System

## Overview

Devin describes itself as: “Devin is an AI coding agent and software engineer that helps developers build better software faster. Parallel cloud agents for serious engineering teams.” The interface is light, built on **Snow (#F8F8F8)** with **Charcoal (#191919)** text, and **Vivid Blue (#317CFF)** as the main accent.

Type is set in **nbInternationalPro** and **inter**. Headlines run large with tight negative tracking; body text is 16px. The surface language is flat. Corners are mostly 6px.

Measured from [devin.ai](https://devin.ai/) on October 24, 2026 at 1440×900 and 390×844 from 325 rendered elements. Values are computed styles from the live page, not the original source files.

## Colors

The palette has 14 roles.

- **Snow (#F8F8F8):** Page background, seen 2 times. Token `background`.
- **Charcoal (#191919):** Primary text and headings, seen 49 times. Token `on-surface`.
- **Near Black (#000000):** Headings and emphasis, seen 6 times. Token `on-surface-strong`.
- **Snow (#FCFCFC):** Raised areas one step from the page, seen 4 times. Token `surface-container-low`, CSS `--color-legacy-white`.
- **Near Black 4% (#0000000A):** Translucent fill for cards and controls, seen 3 times. Token `overlay`, CSS `--color-dt-tint`.
- **Near Black 6% (#0000000F):** Borders and dividers, seen 17 times. Token `outline`.
- **Near Black 8% (#00000014):** Secondary dividers, seen 7 times. Token `outline-variant`.
- **Vivid Blue (#317CFF):** Brand accent (CSS variable), seen 9 times. Token `primary`, CSS `--color-accent`.
- **Near Black (#000000):** Text and icons on primary. Token `on-primary`.
- **Cyan (#39BDD6):** Brand accent (CSS variable), seen 12 times. Token `secondary`.
- **Blue (#4991E5):** Brand accent (CSS variable), seen 12 times. Token `tertiary`.
- **Dark Teal (#00A558):** Success and positive states, seen 6 times. Token `success`, CSS `--color-diff-added`.
- **Vivid Red (#F53B3A):** Errors and destructive states, seen 1 time. Token `error`.
- **Vivid Amber (#FFBB00):** Warnings and highlights, seen 1 time. Token `warning`.

## Typography

**nbInternationalPro** and **inter** share the interface. Fallback stack: `nbInternationalPro, nbInternationalPro Fallback, system-ui, sans-serif`. Other loaded fonts: interLatinExt, ibmPlexMono, lato.

- **headline-display:** nbInternationalPro 40px at weight 400, line height 1.04, tracking -0.03em (32px on mobile). Page title (h1).
- **headline-lg:** nbInternationalPro 32px at weight 400, line height 1.2, tracking -0.02em. Section headings (h2).
- **headline-md:** inter 22px at weight 600, line height 1.27, tracking -0.015em. Sub-section headings.
- **headline-sm:** nbInternationalPro 20px at weight 400, line height 1.2, tracking -0.01em. Card and feature titles.
- **body-md:** nbInternationalPro 16px at weight 400, line height 1.5. Body text.
- **body-sm:** inter 12px at weight 400, line height 1.33. Secondary and small text.
- **label-lg:** nbInternationalPro 14px at weight 400, line height 1.4. Large buttons and tabs.
- **label-md:** inter 13px at weight 500, line height 1.38, tracking -0.005em. Buttons, navigation and labels.
- **label-sm:** inter 12px at weight 500, line height 1.33. Small labels and badges.

## Layout

Spacing follows a 4px grid: 91% of measured gaps and paddings are multiples of 4px.

- **Scale:** xs 4px, sm 8px, md 16px, lg 20px, xl 36px.
- **Sections:** 140px vertical padding between major sections.
- **Gaps:** 36px is the most common gap in flex and grid layouts.
- **Container:** content is capped at 1400px.
- **Page margin:** 60px on each side of full-width sections.
- **Breakpoints:** 359px, 360px, 768px, 939px, 940px, 1024px, 1155px, 1279px.

## Elevation & Depth

The design is flat: no shadows were measured. Hierarchy comes from tonal surface steps (#FCFCFC) and #0000000F borders.

## Shapes

Most elements use 6px corners. Measured radii, most used first:

- **sm (6px):** 52 elements.
- **lg (200px):** 24 elements.
- **md (20px):** 7 elements.

## Components

Measured from the rendered page. Token values reference the tokens above.

- **button-primary (“Get started”):** #000000 fill, #FFFFFF text, 14px/400, 3.35544e+07px radius, padding 0px 12px 1px 12px.
- **button-ghost (“Product”):** transparent fill, #000000 text, 14px/400, 200px radius, padding 1px 8px 0px 12px.
- **link:** transparent fill, #19191966 text, padding 0px.

## Do's and Don'ts

- Do use #F8F8F8 for the page and lift surfaces in small steps: #FCFCFC.
- Do keep text in 2 levels: #191919, #000000.
- Do use #317CFF as the brand accent: header, logo and key highlights.
- Do set headlines in nbInternationalPro with tight tracking (-0.03em).
- Do keep spacing on the 4px grid.
- Do use 6px corners on most elements; larger surfaces also use 200px and 20px.
- Don't add drop shadows for depth; use tonal surfaces.
- Don't introduce new font families beyond nbInternationalPro and inter.
- Don't use #317CFF for large backgrounds or body text.
- Don't make interface transitions slower than 0.2s.

## Motion

Interface transitions are quick: 0.2s, 0.15s, 0.1s. Longer ambient animations run 1s.

- **Easing:** `ease`, `cubic-bezier(0, 0, 0.2, 1)`, `linear`.
- **Reduced motion:** the page responds to `prefers-reduced-motion`.

Generated by [Sitepeel](https://sitepeel.dev/design-md/devin.ai/), the free DESIGN.md generator.