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Weights & Biases — Design System

dark · modern · medium · custom · confidence 92%

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

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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/weights-biases.

Tokens

Weights & Biases's decoded design system: background #1A1C1F, text #ECECEE, accent #FCBC32, link #FCBC32, primary #00AFC2; type scale h1 72px / h2 38px / body 20px; 4px spacing base; 4px base radius. The single interactive/action color is #1A1C1F — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

RoleValue
bg#1A1C1F
surface#26282B
border#393B3E
text#ECECEE
text_muted#9C9C9F
primary#00AFC2
accent#FCBC32
link#FCBC32
secondary#FFCC33
button_bg#1A1C1F
button_text#FFFFFF

Using these colors

Typography

Spacing

Radii

Per-section tokens (8)

Export: DESIGN.md

# Weights & Biases — Design System

> dark, modern, medium, custom

## Colors

| Role | Value |
|------|-------|
| bg | `#1A1C1F` |
| surface | `#26282B` |
| border | `#393B3E` |
| text | `#ECECEE` |
| text_muted | `#9C9C9F` |
| primary | `#00AFC2` |
| accent | `#FCBC32` |
| link | `#FCBC32` |
| secondary | `#FFCC33` |
| button_bg | `#1A1C1F` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#1A1C1F` — 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` are all `#FCBC32` — one role, not several.
- **accent** `#FCBC32` — accent for emphasis — keep it rare on the page.
- **primary** `#00AFC2` — a brand color — but the call-to-action uses #1A1C1F, not this.
- **secondary** `#FFCC33` — 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: **Source Serif 4** _(free fallback: Newsreader)_
- Body: **Source Sans 3** _(free fallback: Newsreader)_
- h1: 72px
- h2: 38px
- body: 20px

> **Fonts —** Source Serif 4 may be proprietary — safe free fallback: Newsreader (Google Fonts). Source Sans 3 may be proprietary — safe free fallback: Newsreader (Google Fonts).

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

## Radius
- base: 4px
- button: 0px

## Primary button
- bg `#1A1C1F` · text `#FFFFFF` · radius 0px

## 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 #1A1C1F — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #1A1C1F;
  --color-surface: #26282B;
  --color-border: #393B3E;
  --color-text: #ECECEE;
  --color-text-muted: #9C9C9F;
  --color-primary: #00AFC2;  /* a brand color — but the call-to-action uses #1A1C1F, not this. */
  --color-accent: #FCBC32;  /* accent for emphasis — keep it rare on the page. */
  --color-link: #FCBC32;  /* inline text links and link-styled controls. */
  --color-secondary: #FFCC33;  /* 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: #1A1C1F;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FFFFFF;
  /* fonts: Source Serif 4 may be proprietary — safe free fallback: Newsreader (Google Fonts). Source Sans 3 may be proprietary — safe free fallback: Newsreader (Google Fonts). */
  --font-heading: "Source Serif 4", "Newsreader", Georgia, 'Times New Roman', serif;
  --font-body: "Source Sans 3", "Newsreader", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --text-h1: 72px;
  --text-h2: 38px;
  --text-body: 20px;
  --radius-base: 4px;
  --radius-button: 0px;
  --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 #1A1C1F — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #1A1C1F;
  --surface: #26282B;
  --border: #393B3E;
  --text: #ECECEE;
  --text-muted: #9C9C9F;
  --primary: #00AFC2;  /* a brand color — but the call-to-action uses #1A1C1F, not this. */
  --accent: #FCBC32;  /* accent for emphasis — keep it rare on the page. */
  --link: #FCBC32;  /* inline text links and link-styled controls. */
  --secondary: #FFCC33;  /* 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: #1A1C1F;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FFFFFF;
  --font-heading: "Source Serif 4", "Newsreader", Georgia, 'Times New Roman', serif;
  --font-body: "Source Sans 3", "Newsreader", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 4px;
  --radius-button: 0px;
}
/* fonts: Source Serif 4 may be proprietary — safe free fallback: Newsreader (Google Fonts). Source Sans 3 may be proprietary — safe free fallback: Newsreader (Google Fonts). */