CodeSandbox — Design System

Name: CodeSandbox design system
Creator: Mozaika
Keywords: design system, design tokens, CodeSandbox, dark, custom

dark · modern · high · custom · confidence 90%

CodeSandbox compiles its pitch in TWK Everett at 120px/500 on studio black #0E0E0E, Inter at 18-28px for the reading, and acid lime #EAFF96 buttons at a sharp 4px radius. Editor frames and template grids provide the interface texture — cloud development presented with the outsized, confident type of a tool that boots faster than your laptop.

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/codesandbox.

Tokens

CodeSandbox's decoded design system: background #0E0E0E, text #ECECEE, accent #EAFF96, link #DCFF50, primary #EAFF96; type scale h1 120px / h2 24px / body 18px; 4px spacing base; 4px base radius. The single interactive/action color is #EAFF96 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#0E0E0E`
surface	`#1B1B1B`
border	`#2F2F2F`
text	`#ECECEE`
text_muted	`#979798`
primary	`#EAFF96`
accent	`#EAFF96`
link	`#DCFF50`
button_bg	`#EAFF96`
button_text	`#343434`

Using these colors

Action color #EAFF96 — the single interactive color; only on things you click or must notice, never large fills.
primary, accent, button_bg are all #EAFF96 — one role, not several (the action color).
accent #EAFF96 — 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 #DCFF50 — inline text links and link-styled controls.

Typography

Heading: Inter
Body: Inter
h1: 120px
h2: 24px
body: 18px

Spacing

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

Radii

base: 4px
button: 6px

Per-section tokens (9)

Export: DESIGN.md

# CodeSandbox — Design System

> dark, modern, high, custom

CodeSandbox compiles its pitch in TWK Everett at 120px/500 on studio black #0E0E0E, Inter at 18-28px for the reading, and acid lime #EAFF96 buttons at a sharp 4px radius. Editor frames and template grids provide the interface texture — cloud development presented with the outsized, confident type of a tool that boots faster than your laptop.

## Colors

| Role | Value |
|------|-------|
| bg | `#0E0E0E` |
| surface | `#1B1B1B` |
| border | `#2F2F2F` |
| text | `#ECECEE` |
| text_muted | `#979798` |
| primary | `#EAFF96` |
| accent | `#EAFF96` |
| link | `#DCFF50` |
| button_bg | `#EAFF96` |
| button_text | `#343434` |

**Using these colors**

- **Action color** `#EAFF96` — 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`, `button_bg` are all `#EAFF96` — one role, not several (your action color).
- **accent** `#EAFF96` — 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** `#DCFF50` — inline text links and link-styled controls.

## Typography

- Heading: **Inter**
- Body: **Inter**
- h1: 120px
- h2: 24px
- body: 18px

> **Fonts —** Inter — free, on Google.

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

## Radius
- base: 4px
- button: 6px

## Primary button
- bg `#EAFF96` · text `#343434` · radius 6px

## 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.

Export: Tailwind v4 (@theme)

@theme {
  /* action color #EAFF96 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #0E0E0E;
  --color-surface: #1B1B1B;
  --color-border: #2F2F2F;
  --color-text: #ECECEE;
  --color-text-muted: #979798;
  --color-primary: #EAFF96;  /* primary brand / action color. */
  --color-accent: #EAFF96;  /* 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: #DCFF50;  /* inline text links and link-styled controls. */
  --color-button-bg: #EAFF96;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #343434;
  /* fonts: Inter — free, on Google. */
  --font-heading: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --text-h1: 120px;
  --text-h2: 24px;
  --text-body: 18px;
  --radius-base: 4px;
  --radius-button: 6px;
  --spacing-1: 2px;
  --spacing-2: 4px;
  --spacing-3: 6px;
  --spacing-4: 8px;
  --spacing-5: 12px;
  --spacing-6: 16px;
  --spacing-7: 24px;
  --spacing-8: 32px;
}

Export: CSS variables

:root {
  /* action color #EAFF96 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #0E0E0E;
  --surface: #1B1B1B;
  --border: #2F2F2F;
  --text: #ECECEE;
  --text-muted: #979798;
  --primary: #EAFF96;  /* primary brand / action color. */
  --accent: #EAFF96;  /* 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: #DCFF50;  /* inline text links and link-styled controls. */
  --button-bg: #EAFF96;  /* primary-button fill — the main call-to-action color. */
  --button-text: #343434;
  --font-heading: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 4px;
  --radius-button: 6px;
}
/* fonts: Inter — free, on Google. */