Langfuse — Design System

light · modern · medium · tailwind · confidence 92%

The full decoded design system for Langfuse: color roles, type scale, spacing, radii and paste-ready DESIGN.md / Tailwind / CSS exports.

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Tokens

Langfuse's decoded design system: background #EDEDE8, text #020817, accent #1863DC, link #020817, primary #1863DC; type scale h1 68px / h2 32px / body 18px; 4px spacing base; 2px base radius. The single interactive/action color is #1863DC — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #1863DC — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent, button_bg are all #1863DC — one role, not several (the action color).
• accent #1863DC — 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 #020817 — inline text links and link-styled controls.
• secondary #4E4B66 — 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: Inter
• Body: Inter
• h1: 68px
• h2: 32px
• body: 18px

Spacing

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

Radii

• base: 2px
• button: 2px

Per-section tokens (13)

• Hero
• Logo Wall
• Feature
• Steps / How-it-works
• Bento Grid
• Integrations
• Feature
• Feature
• Feature
• Feature
• CTA / Sign-up
• FAQ
• Footer

Export: DESIGN.md

# Langfuse — Design System

> light, modern, medium, tailwind

## Colors

| Role | Value |
|------|-------|
| bg | `#EDEDE8` |
| surface | `#DEDFDB` |
| border | `#C9CAC8` |
| text | `#020817` |
| text_muted | `#5B5F66` |
| primary | `#1863DC` |
| accent | `#1863DC` |
| link | `#020817` |
| secondary | `#4E4B66` |
| button_bg | `#1863DC` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#1863DC` — 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 `#1863DC` — one role, not several (your action color).
- **accent** `#1863DC` — 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** `#020817` — inline text links and link-styled controls.
- **secondary** `#4E4B66` — 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: **Inter**
- Body: **Inter**
- h1: 68px
- h2: 32px
- body: 18px

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

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

## Radius
- base: 2px
- button: 2px

## Primary button
- bg `#1863DC` · text `#FFFFFF` · radius 2px

## 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 #1863DC — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #EDEDE8;
  --color-surface: #DEDFDB;
  --color-border: #C9CAC8;
  --color-text: #020817;
  --color-text-muted: #5B5F66;
  --color-primary: #1863DC;  /* primary brand / action color. */
  --color-accent: #1863DC;  /* 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: #020817;  /* inline text links and link-styled controls. */
  --color-secondary: #4E4B66;  /* 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: #1863DC;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FFFFFF;
  /* 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: 68px;
  --text-h2: 32px;
  --text-body: 18px;
  --radius-base: 2px;
  --radius-button: 2px;
  --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 #1863DC — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #EDEDE8;
  --surface: #DEDFDB;
  --border: #C9CAC8;
  --text: #020817;
  --text-muted: #5B5F66;
  --primary: #1863DC;  /* primary brand / action color. */
  --accent: #1863DC;  /* 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: #020817;  /* inline text links and link-styled controls. */
  --secondary: #4E4B66;  /* 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: #1863DC;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FFFFFF;
  --font-heading: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 2px;
  --radius-button: 2px;
}
/* fonts: Inter — free, on Google. */