Weights & Biases — Design System

dark · modern · medium · custom · confidence 92% · deep decode

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

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/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

Using these colors

• Action color #1A1C1F — the single interactive color; only on things you click or must notice, never large fills.
• accent, link are all #FCBC32 — one role, not several (the action color).
• 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
• Body: Source Sans 3
• h1: 72px
• h2: 38px
• body: 20px

Spacing

• base unit: 4px
• scale: 5px, 6px, 7px, 8px, 10px, 12px, 16px, 20px, 24px, 32px

Radii

• base: 4px
• button: 0px

Shadows (elevation)

• subtle: rgba(0, 0, 0, 0.2) 0px 2px 0px 0px
• card: rgba(10, 14, 21, 0.5) 0px 16px 16px 0px

Motion

Micro-interactions run at 300ms (dominant) with ease.

• durations: 300ms · 400ms · 100ms
• easings: ease · ease-in-out
• animated properties: transform, background, border, box-shadow

Native design tokens

…and 21 more measured on the page.

Button states (measured)

• primary focus: outline 1px solid rgb(255, 255, 255)

Layout (measured)

• container max-width: 950px
• nav: 96px

Motion choreography (measured)

Load order: button.e-n-tab-title×10 → svg×4 → svg×5 → svg×40 → button.cookie-setting-link → button.cookie-setting-link

Stagger: svg ×4 — 300ms apart.

Responsive (measured)

• breakpoints: 576px · 600px · 768px · 992px · 1000px · 1280px
• mobile (390px): hero 43px · nav inline

Per-section tokens (8)

• Hero — dark · bg #1A1C1E · text #FAF6E7 · 1 col · left
• Logo Wall — dark · bg #1A1C1E · text #A2A8AA · 4 col · split
• Bento Grid — dark · bg #1A1C1E · text #F6ECCF · 1 col · left
• Feature — dark · bg #28272A · text #F4F4F5 · 2 col · split
• Feature — dark · bg #1A1C1E · text #7B7F82 · 3 col · split
• Feature — dark · bg #282A30 · text #575A5C · 3 col · split
• CTA / Sign-up — dark · bg #282A30 · text #6B675B · 2 col · split
• Footer — dark · bg #1A1C1E · text #717274 · 2 col · split

Export: DESIGN.md

# Weights & Biases — Design System

> dark, modern, medium, custom — deep decode (measured live)

## 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.
- **Page coverage** (full-page screenshot pixels): `#1A1C1F` 66.9% · `#252E34` 14.2% · `#0C0D0E` 6.5% · `#323E43` 6.3%

## Typography

- Heading: **Source Serif 4** _(free fallback: Newsreader)_
- Body: **Source Sans 3** _(free fallback: Newsreader)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 72px / 600 · lh 72px |
| h2 | 54px / 400 · lh 66px |
| h3 | 40px / 400 · lh 48px |
| body | 20px / 400 · lh 30px |
| small | 18px / 400 · lh 22px |
| eyebrow | 16px / 400 · tracking 0.96px |

- Weight ladder: 400 · 600 — use these exact measured weights, not the 400/600 defaults.

> **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 (inferred from the measured scale)
- measured scale: 5px, 6px, 7px, 8px, 10px, 12px, 16px, 20px, 24px, 32px — snap all gaps/padding to these

## Radius
- base: 4px
- button: 0px
- card: 8px
- pill: 9999px
- sharp: 2px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#FFCC33` / `#000000` | 1px solid rgb(255, 204, 51) | 2px | 12px 10px 12px 10px | 600 13.008px / 0.13008px | none |
| secondary | `rgba(0, 0, 0, 0)` / `#FFFFFF` | 1px solid rgb(173, 176, 181) | 8px | 15px 26px 15px 26px | 600 16px / 0.96px | none |

**States (measured, not guessed)**

- primary focus: outline `1px solid rgb(255, 255, 255)`
- secondary hover: border `1px solid rgb(255, 255, 255)`
- transition: `all 0.3s ease`

## Shadows (elevation)
- subtle: `rgba(0, 0, 0, 0.2) 0px 2px 0px 0px`
- card: `rgba(10, 14, 21, 0.5) 0px 16px 16px 0px`

## Motion
- durations: 300ms (dominant) · 400ms · 100ms
- easings: `ease` (dominant) · `ease-in-out`
- animated properties: transform, background, border, box-shadow

Micro-interactions use the dominant duration + easing; nothing on the page animates slower than the longest duration above — don't invent springier motion.

## Their own tokens (verbatim from :root)

| Token | Value |
|-------|-------|
| `--wp--preset--color--black` | `#000000` |
| `--wp--preset--color--cyan-bluish-gray` | `#abb8c3` |
| `--wp--preset--color--white` | `#ffffff` |
| `--wp--preset--color--pale-pink` | `#f78da7` |
| `--wp--preset--color--vivid-red` | `#cf2e2e` |
| `--wp--preset--color--luminous-vivid-orange` | `#ff6900` |
| `--wp--preset--color--luminous-vivid-amber` | `#fcb900` |
| `--wp--preset--color--light-green-cyan` | `#7bdcb5` |
| `--wp--preset--color--vivid-green-cyan` | `#00d084` |
| `--wp--preset--color--pale-cyan-blue` | `#8ed1fc` |
| `--wp--preset--color--vivid-cyan-blue` | `#0693e3` |
| `--wp--preset--color--vivid-purple` | `#9b51e0` |

_…and 19 more measured on the page._

Prefer these names when extending their system — it's the brand's actual vocabulary.

## Layout (measured)
- container max 950px
- nav: 96px

## Motion choreography (measured)
Load order: `button.e-n-tab-title`×10 @0ms → `svg`×4 @0ms → `svg`×5 @54ms → `svg`×40 @70ms → `button.cookie-setting-link` @405ms → `button.cookie-setting-link` @405ms
- `div.elementor-image-carousel` — transform translate3d(-1326px, 0px, 0px)→translate3d(-1515.43px, 0px, 0px) — 4000ms
- `svg` ×5 — opacity 0→1 — 500ms ease-in-out (delay 500ms)
- stagger: `svg` ×4 — 300ms apart

Rebuild the timeline, not just the durations — order, delays and staggers above are the choreography.

## Components (measured)
- link: #1A1C1F · no underline

## Responsive (measured)
- breakpoints: 576px · 600px · 768px · 992px · 1000px · 1280px
- mobile (390px): hero 43px · body 20px · nav: inline

## 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.
Hover/focus states, shadows and motion timings above are measured from the live page — match them exactly, don't re-guess them.

---

> **Decoded with Mozaika** — measured live, not guessed. Full decoded design system + one-command install: mozaika.design/ds/weights-biases

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;
  /* measured weights: 400, 600 — use these, not 400/600 */
  --text-hero: 72px; --font-weight-hero: 600; --leading-hero: 72px;
  --text-h2: 54px; --font-weight-h2: 400; --leading-h2: 66px;
  --text-h3: 40px; --font-weight-h3: 400; --leading-h3: 48px;
  --text-body: 20px; --font-weight-body: 400; --leading-body: 30px;
  --text-small: 18px; --font-weight-small: 400; --leading-small: 22px;
  --text-eyebrow: 16px; --font-weight-eyebrow: 400; --tracking-eyebrow: 0.96px;
  --radius-base: 4px;
  --radius-button: 0px;
  --radius-card: 8px;
  --radius-pill: 9999px;
  --radius-sharp: 2px;
  --shadow-card: rgba(10, 14, 21, 0.5) 0px 16px 16px 0px;
  --shadow-subtle: rgba(0, 0, 0, 0.2) 0px 2px 0px 0px;
  --outline-focus: 1px solid rgb(255, 255, 255);  /* measured focus ring */
  --ease-brand: ease;
  --duration-fast: 100ms;  /* use: duration-[var(--duration-fast)] */
  --duration-base: 300ms;
  --duration-slow: 400ms;
  --spacing: 4px;  /* measured base — drives the p-*/gap-* scale. steps seen on the page: 5, 6, 7, 8, 10, 12, 16, 20, 24, 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;
  --text-hero: 72px; --weight-hero: 600; --leading-hero: 72px;
  --text-h2: 54px; --weight-h2: 400; --leading-h2: 66px;
  --text-h3: 40px; --weight-h3: 400; --leading-h3: 48px;
  --text-body: 20px; --weight-body: 400; --leading-body: 30px;
  --text-small: 18px; --weight-small: 400; --leading-small: 22px;
  --text-eyebrow: 16px; --weight-eyebrow: 400; --tracking-eyebrow: 0.96px;
  --radius: 4px;
  --radius-button: 0px;
  --radius-card: 8px;
  --radius-pill: 9999px;
  --radius-sharp: 2px;
  --shadow-card: rgba(10, 14, 21, 0.5) 0px 16px 16px 0px;
  --shadow-subtle: rgba(0, 0, 0, 0.2) 0px 2px 0px 0px;
  --focus-ring: 1px solid rgb(255, 255, 255);
  --ease: ease;
  --duration-fast: 100ms;
  --duration-base: 300ms;
  --duration-slow: 400ms;
}

/* their own tokens, verbatim from the site's :root */
:root {
  --wp--preset--color--black: #000000;
  --wp--preset--color--cyan-bluish-gray: #abb8c3;
  --wp--preset--color--white: #ffffff;
  --wp--preset--color--pale-pink: #f78da7;
  --wp--preset--color--vivid-red: #cf2e2e;
  --wp--preset--color--luminous-vivid-orange: #ff6900;
  --wp--preset--color--luminous-vivid-amber: #fcb900;
  --wp--preset--color--light-green-cyan: #7bdcb5;
  --wp--preset--color--vivid-green-cyan: #00d084;
  --wp--preset--color--pale-cyan-blue: #8ed1fc;
  --wp--preset--color--vivid-cyan-blue: #0693e3;
  --wp--preset--color--vivid-purple: #9b51e0;
}
/* 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). */