MozaikaDesign system

AssemblyAI — Design System

light · modern · medium · tailwind · confidence 92% · deep decode

The full decoded design system for AssemblyAI: 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/assemblyai.

Tokens

AssemblyAI's decoded design system: background #FDFCF8, text #1D1B16, accent #3923C7, link #C7C3B2, primary #3923C7; type scale h1 72px / h2 64px / body 12px; 8px spacing base; 0px base radius. The single interactive/action color is #3923C7 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

RoleValue
bg#FDFCF8
surface#EFEEEA
border#DBDAD6
text#1D1B16
text_muted#72706B
primary#3923C7
accent#3923C7
link#C7C3B2
button_bg#3923C7
button_text#FFFFFF

Using these colors

Typography

Spacing

Radii

Shadows (elevation)

Motion

Micro-interactions run at 150ms (dominant) with cubic-bezier(0.4, 0, 0.2, 1).

Native design tokens

TokenValue
--color-black-500#1d1b16
--color-neutral-300#c7c3b2
--color-cobolt-500#3923c7
--color-green-100#cee0d4
--color-neutral-200#dad7cb
--color-green-500#01762f
--color-white#fff
--color-blush-300#ec9d92
--color-black-300#777673
--color-gray-100oklch(96.7% .003 264.542)

…and 87 more measured on the page.

Button states (measured)

Layout (measured)

Motion choreography (measured)

Load order: div.flex → div.onetrust-pc-dark-filter

Scroll reveal: 2 elements rest at opacity 0, animate in over 0.5s cubic-bezier(0.4, 0, 0.2, 1).

Overlay recipe (measured)

dialog panel: rgba(0, 0, 0, 0) · radius 0px

Responsive (measured)

Per-section tokens (9)

Export: DESIGN.md

# AssemblyAI — Design System

> light, modern, medium, tailwind — deep decode (measured live)

## Colors

| Role | Value |
|------|-------|
| bg | `#FDFCF8` |
| surface | `#EFEEEA` |
| border | `#DBDAD6` |
| text | `#1D1B16` |
| text_muted | `#72706B` |
| primary | `#3923C7` |
| accent | `#3923C7` |
| link | `#C7C3B2` |
| button_bg | `#3923C7` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#3923C7` — 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 `#3923C7` — one role, not several (your action color).
- **accent** `#3923C7` — 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** `#C7C3B2` — fails contrast on the background (~1.7:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
- **Page coverage** (full-page screenshot pixels): `#7E7D7B` 76.4% · `#FFFFFF` 15.5% · `#54546C` 6.5% · `#98999B` 1.5%

## Typography

- Heading: **Georgia**
- Body: **Georgia**
- Mono: **Modern Gothic Mono**

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 72px / 400 · lh 72px · tracking -3.6px |
| h2 | 64px / 400 · lh 64px · tracking -3.2px |
| h3 | 56px / 400 · lh 56px · tracking -2.8px |
| body | 16px / 400 · lh 21px |
| small | 14px / 400 · lh 18px |
| eyebrow | 12px / 400 · tracking 1.2px |

- Weight ladder: 400 · 600 · 700 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** Georgia — system font, no web load needed.

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 4px, 8px, 10px, 12px, 16px, 24px, 30px, 32px, 48px, 80px — snap all gaps/padding to these
- section rhythm: 80px top/bottom padding per section (measured)

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

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#3923C7` / `#FFFFFF` | none | 2px | 8px 12px 8px 12px | 400 12px / 1.2px | none |
| secondary | `rgba(0, 0, 0, 0)` / `#3923C7` | 1px solid rgb(57, 35, 199) | 2px | 8px 12px 8px 12px | 400 12px / 1.2px | none |

**States (measured, not guessed)**

- primary hover: background `#887BDD`
- primary focus: outline `1px auto rgb(16, 16, 16)`
- transition: `background-color 0.2s ease`

## Shadows (elevation)
- card: `rgba(0, 0, 0, 0.2) 0px 0px 18px 0px`

## Motion
- durations: 150ms (dominant) · 200ms · 500ms
- easings: `cubic-bezier(0.4, 0, 0.2, 1)` (dominant) · `ease`
- animated properties: color, outline-color, background-color, border-color

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 |
|-------|-------|
| `--color-black-500` | `#1d1b16` |
| `--color-neutral-300` | `#c7c3b2` |
| `--color-cobolt-500` | `#3923c7` |
| `--color-green-100` | `#cee0d4` |
| `--color-neutral-200` | `#dad7cb` |
| `--color-green-500` | `#01762f` |
| `--color-white` | `#fff` |
| `--color-blush-300` | `#ec9d92` |
| `--color-black-300` | `#777673` |
| `--color-gray-100` | `oklch(96.7% .003 264.542)` |
| `--color-black-400` | `#4a4945` |
| `--color-page-bg` | `#fdfcf8` |

_…and 85 more measured on the page._

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

## Layout (measured)
- container max 1440px · common grid: 2-col
- nav: 0px

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 114 | 424 | 2 | 29 | 0/0 | 71/29 |
| 538 | 361 | — | — | 0/0 | — |
| 899 | 409 | — | — | 0/0 | — |
| 1308 | 2059 | — | — | 0/0 | — |
| 3367 | 2160 | 2 | 120 | 0/0 | 43/57 |

## Motion choreography (measured)
Load order: `div.flex` @0ms → `div.onetrust-pc-dark-filter` @305ms
- scroll reveal: 2 elements rest at opacity 0, animate in over 0.5s cubic-bezier(0.4, 0, 0.2, 1) (0 revealed during the drive).
- overlay dialog (auto-opened): panel rgba(0, 0, 0, 0) · r 0px

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

## Components (measured)
- card ×6: pad 48px 32px 48px 32px · r 0px · bg #1D1B16
  - hover: font-weight `400` · letter-spacing `normal` · outline `1px solid rgb(136, 123, 221)`
- link: #3923C7 · no underline — hover #FFFFFF

## Responsive (measured)
- breakpoints: 425px · 550px · 600px · 640px · 768px · 896px
- mobile (390px): hero 40px · body 16px · nav: hamburger

## 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/assemblyai

Export: Tailwind v4 (@theme)

@theme {
  /* action color #3923C7 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #FDFCF8;
  --color-surface: #EFEEEA;
  --color-border: #DBDAD6;
  --color-text: #1D1B16;
  --color-text-muted: #72706B;
  --color-primary: #3923C7;  /* primary brand / action color. */
  --color-accent: #3923C7;  /* 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: #C7C3B2;  /* fails contrast on the background (~1.7:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference). */
  --color-button-bg: #3923C7;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FFFFFF;
  /* fonts: Georgia — system font, no web load needed. */
  --font-heading: "Georgia", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Georgia", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: "Modern Gothic Mono", ui-monospace, monospace;
  /* measured weights: 400, 600, 700 — use these, not 400/600 */
  --text-hero: 72px; --font-weight-hero: 400; --leading-hero: 72px; --tracking-hero: -3.6px;
  --text-h2: 64px; --font-weight-h2: 400; --leading-h2: 64px; --tracking-h2: -3.2px;
  --text-h3: 56px; --font-weight-h3: 400; --leading-h3: 56px; --tracking-h3: -2.8px;
  --text-body: 16px; --font-weight-body: 400; --leading-body: 21px;
  --text-small: 14px; --font-weight-small: 400; --leading-small: 18px;
  --text-eyebrow: 12px; --font-weight-eyebrow: 400; --tracking-eyebrow: 1.2px;
  --radius-base: 0px;
  --radius-button: 2px;
  --radius-card: 4px;
  --radius-sharp: 2px;
  --shadow-card: rgba(0, 0, 0, 0.2) 0px 0px 18px 0px;
  --color-btn-hover: #887BDD;  /* measured primary hover fill */
  --outline-focus: 1px auto rgb(16, 16, 16);  /* measured focus ring */
  --ease-brand: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;  /* use: duration-[var(--duration-fast)] */
  --duration-base: 200ms;
  --duration-slow: 500ms;
  --section-y: 80px;  /* per-section vertical padding (measured) */
  --spacing: 8px;  /* measured base — drives the p-*/gap-* scale. steps seen on the page: 4, 8, 10, 12, 16, 24, 30, 32, 48, 80px */
}

Export: CSS variables

:root {
  /* action color #3923C7 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #FDFCF8;
  --surface: #EFEEEA;
  --border: #DBDAD6;
  --text: #1D1B16;
  --text-muted: #72706B;
  --primary: #3923C7;  /* primary brand / action color. */
  --accent: #3923C7;  /* 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: #C7C3B2;  /* fails contrast on the background (~1.7:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference). */
  --button-bg: #3923C7;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FFFFFF;
  --font-heading: "Georgia", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Georgia", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: "Modern Gothic Mono", ui-monospace, monospace;
  --text-hero: 72px; --weight-hero: 400; --leading-hero: 72px; --tracking-hero: -3.6px;
  --text-h2: 64px; --weight-h2: 400; --leading-h2: 64px; --tracking-h2: -3.2px;
  --text-h3: 56px; --weight-h3: 400; --leading-h3: 56px; --tracking-h3: -2.8px;
  --text-body: 16px; --weight-body: 400; --leading-body: 21px;
  --text-small: 14px; --weight-small: 400; --leading-small: 18px;
  --text-eyebrow: 12px; --weight-eyebrow: 400; --tracking-eyebrow: 1.2px;
  --radius: 0px;
  --radius-button: 2px;
  --radius-card: 4px;
  --radius-sharp: 2px;
  --shadow-card: rgba(0, 0, 0, 0.2) 0px 0px 18px 0px;
  --btn-bg-hover: #887BDD;
  --focus-ring: 1px auto rgb(16, 16, 16);
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-base: 200ms;
  --duration-slow: 500ms;
  --section-y: 80px;
}

/* their own tokens, verbatim from the site's :root */
:root {
  --color-black-500: #1d1b16;
  --color-neutral-300: #c7c3b2;
  --color-cobolt-500: #3923c7;
  --color-green-100: #cee0d4;
  --color-neutral-200: #dad7cb;
  --color-green-500: #01762f;
  --color-white: #fff;
  --color-blush-300: #ec9d92;
  --color-black-300: #777673;
  --color-gray-100: oklch(96.7% .003 264.542);
  --color-black-400: #4a4945;
  --color-page-bg: #fdfcf8;
}
/* fonts: Georgia — system font, no web load needed. */