MozaikaDesign system

StackBlitz — Design System

dark · modern · high · custom · confidence 92%

StackBlitz (now the house of Bolt) sets 94px/600 Manrope with highlighted keyword chips inside the headline, on gunmetal #1C1F25 with blue #1574EF 10px-radius buttons. WebContainers diagrams and editor frames carry the engineering story — browser-native dev tooling with its headline typeset like annotated code.

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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/ds/stackblitz.

Tokens

StackBlitz's decoded design system: background #1C1F25, text #A1A5B0, accent #1574EF, link #1574EF, primary #A1A5B0; type scale h1 94px / h2 94px / body 18px; 4px spacing base; 8px base radius. The single interactive/action color is #1574EF — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

RoleValue
bg#1C1F25
surface#23272D
border#2F3339
text#A1A5B0
text_muted#6E727B
primary#A1A5B0
accent#1574EF
link#1574EF
secondary#212633
button_bg#1574EF
button_text#FFFFFF

Using these colors

Typography

Spacing

Radii

Shadow

rgba(255, 255, 255, 0.14) 0px 0px 0px 1px inset

Per-section tokens (7)

Export: DESIGN.md

# StackBlitz — Design System

> dark, modern, high, custom

StackBlitz (now the house of Bolt) sets 94px/600 Manrope with highlighted keyword chips inside the headline, on gunmetal #1C1F25 with blue #1574EF 10px-radius buttons. WebContainers diagrams and editor frames carry the engineering story — browser-native dev tooling with its headline typeset like annotated code.

## Colors

| Role | Value |
|------|-------|
| bg | `#1C1F25` |
| surface | `#23272D` |
| border | `#2F3339` |
| text | `#A1A5B0` |
| text_muted | `#6E727B` |
| primary | `#A1A5B0` |
| accent | `#1574EF` |
| link | `#1574EF` |
| secondary | `#212633` |
| button_bg | `#1574EF` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#1574EF` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `accent`, `link`, `button_bg` are all `#1574EF` — one role, not several (your action color).
- **accent** `#1574EF` — 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.
- **primary** `#A1A5B0` — ≈ the text color — a foreground/text color, not an action color (action = #1574EF).
- **secondary** `#212633` — 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: **Manrope**
- Body: **Inter**
- h1: 94px
- h2: 94px
- body: 18px

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

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

## Radius
- base: 8px
- button: 10px

## Primary button
- bg `#1574EF` · text `#FFFFFF` · radius 10px

## 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 #1574EF — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #1C1F25;
  --color-surface: #23272D;
  --color-border: #2F3339;
  --color-text: #A1A5B0;
  --color-text-muted: #6E727B;
  --color-primary: #A1A5B0;  /* ≈ the text color — a foreground/text color, not an action color (action = #1574EF). */
  --color-accent: #1574EF;  /* 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: #1574EF;  /* inline text links — shares the action color. */
  --color-secondary: #212633;  /* 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. */
  --color-button-bg: #1574EF;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FFFFFF;
  /* fonts: Manrope — free, on Google. Inter — free, on Google. */
  --font-heading: "Manrope", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --text-h1: 94px;
  --text-h2: 94px;
  --text-body: 18px;
  --radius-base: 8px;
  --radius-button: 10px;
  --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 #1574EF — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #1C1F25;
  --surface: #23272D;
  --border: #2F3339;
  --text: #A1A5B0;
  --text-muted: #6E727B;
  --primary: #A1A5B0;  /* ≈ the text color — a foreground/text color, not an action color (action = #1574EF). */
  --accent: #1574EF;  /* 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: #1574EF;  /* inline text links — shares the action color. */
  --secondary: #212633;  /* 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. */
  --button-bg: #1574EF;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FFFFFF;
  --font-heading: "Manrope", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 8px;
  --radius-button: 10px;
}
/* fonts: Manrope — free, on Google. Inter — free, on Google. */