Harvey — Design System

Name: Harvey design system
Creator: Mozaika
Keywords: design system, design tokens, Harvey, dark, tailwind

dark · professional · medium · tailwind · confidence 85%

The full decoded design system for Harvey: 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/harvey.

Tokens

Harvey's decoded design system: background #0F0E0D, text #ECECEE, accent #FAFAF9, link #122124, primary #123456; type scale h1 96px / h2 40px / body 14px; 4px spacing base; 0px base radius. The single interactive/action color is #FAFAF9 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#0F0E0D`
surface	`#1C1B1A`
border	`#302F2E`
text	`#ECECEE`
text_muted	`#989798`
primary	`#123456`
accent	`#FAFAF9`
link	`#122124`
button_bg	`#FAFAF9`
button_text	`#0F0E0D`

Using these colors

Action color #FAFAF9 — the single interactive color; only on things you click or must notice, never large fills.
accent, button_bg are all #FAFAF9 — one role, not several (the action color).
accent #FAFAF9 — 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 #123456 — a brand color — but the call-to-action uses #FAFAF9, not this.
link #122124 — fails contrast on the background (~1.2:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).

Typography

Heading: Roboto
Body: Roboto
h1: 96px
h2: 40px
body: 14px

Spacing

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

Radii

base: 0px
button: 4px

Per-section tokens (10)

Export: DESIGN.md

# Harvey — Design System

> dark, professional, medium, tailwind

## Colors

| Role | Value |
|------|-------|
| bg | `#0F0E0D` |
| surface | `#1C1B1A` |
| border | `#302F2E` |
| text | `#ECECEE` |
| text_muted | `#989798` |
| primary | `#123456` |
| accent | `#FAFAF9` |
| link | `#122124` |
| button_bg | `#FAFAF9` |
| button_text | `#0F0E0D` |

**Using these colors**

- **Action color** `#FAFAF9` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `accent`, `button_bg` are all `#FAFAF9` — one role, not several (your action color).
- **accent** `#FAFAF9` — 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** `#123456` — a brand color — but the call-to-action uses #FAFAF9, not this.
- **link** `#122124` — fails contrast on the background (~1.2:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).

## Typography

- Heading: **Roboto**
- Body: **Roboto**
- h1: 96px
- h2: 40px
- body: 14px

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

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

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

## Primary button
- bg `#FAFAF9` · text `#0F0E0D` · radius 4px

## 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 #FAFAF9 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #0F0E0D;
  --color-surface: #1C1B1A;
  --color-border: #302F2E;
  --color-text: #ECECEE;
  --color-text-muted: #989798;
  --color-primary: #123456;  /* a brand color — but the call-to-action uses #FAFAF9, not this. */
  --color-accent: #FAFAF9;  /* 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: #122124;  /* fails contrast on the background (~1.2:1) — 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: #FAFAF9;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #0F0E0D;
  /* fonts: Roboto — free, on Google. */
  --font-heading: "Roboto", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Roboto", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --text-h1: 96px;
  --text-h2: 40px;
  --text-body: 14px;
  --radius-base: 0px;
  --radius-button: 4px;
  --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 #FAFAF9 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #0F0E0D;
  --surface: #1C1B1A;
  --border: #302F2E;
  --text: #ECECEE;
  --text-muted: #989798;
  --primary: #123456;  /* a brand color — but the call-to-action uses #FAFAF9, not this. */
  --accent: #FAFAF9;  /* 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: #122124;  /* fails contrast on the background (~1.2:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference). */
  --button-bg: #FAFAF9;  /* primary-button fill — the main call-to-action color. */
  --button-text: #0F0E0D;
  --font-heading: "Roboto", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Roboto", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 0px;
  --radius-button: 4px;
}
/* fonts: Roboto — free, on Google. */