Cosmic Night UI — Design System

Name: Cosmic Night UI design system
Creator: Mozaika
Keywords: design system, design tokens, Cosmic Night UI, dark, react

dark · modern · medium · react · confidence 95%

The Cosmic Night theme — a cohesive shadcn/ui design system (measured tokens).

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/cosmic-night-ui.

Tokens

Cosmic Night UI's decoded design system: background #0F0F1A, text #E2E2F5, accent #A48FFF, link #A48FFF, primary #A48FFF; type scale h1 36px / h2 24px / body 14px; 4px spacing base; 8px base radius. The single interactive/action color is #A48FFF — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#0F0F1A`
surface	`#1B1B27`
border	`#2E2E3A`
text	`#E2E2F5`
text_muted	`#9191A1`
primary	`#A48FFF`
accent	`#A48FFF`
link	`#A48FFF`
button_bg	`#A48FFF`
button_text	`#0F0F1A`

Using these colors

Action color #A48FFF — the single interactive color; only on things you click or must notice, never large fills.
primary, accent, link, button_bg are all #A48FFF — one role, not several (the action color).
accent #A48FFF — 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.

Typography

Heading: Inter
Body: Inter
h1: 36px
h2: 24px
body: 14px

Spacing

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

Radii

base: 8px
button: 8px

Export: DESIGN.md

# Cosmic Night UI — Design System

> dark, modern, medium, react

The Cosmic Night theme — a cohesive shadcn/ui design system (measured tokens).

## Colors

| Role | Value |
|------|-------|
| bg | `#0F0F1A` |
| surface | `#1B1B27` |
| border | `#2E2E3A` |
| text | `#E2E2F5` |
| text_muted | `#9191A1` |
| primary | `#A48FFF` |
| accent | `#A48FFF` |
| link | `#A48FFF` |
| button_bg | `#A48FFF` |
| button_text | `#0F0F1A` |

**Using these colors**

- **Action color** `#A48FFF` — 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`, `link`, `button_bg` are all `#A48FFF` — one role, not several (your action color).
- **accent** `#A48FFF` — 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.

## Typography

- Heading: **Inter**
- Body: **Inter**
- h1: 36px
- h2: 24px
- body: 14px

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

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

## Radius
- base: 8px
- button: 8px

## Primary button
- bg `#A48FFF` · text `#0F0F1A` · radius 8px

## 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.

---

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

Export: Tailwind v4 (@theme)

@theme {
  /* action color #A48FFF — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #0F0F1A;
  --color-surface: #1B1B27;
  --color-border: #2E2E3A;
  --color-text: #E2E2F5;
  --color-text-muted: #9191A1;
  --color-primary: #A48FFF;  /* primary brand / action color. */
  --color-accent: #A48FFF;  /* 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: #A48FFF;  /* inline text links — shares the action color. */
  --color-button-bg: #A48FFF;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #0F0F1A;
  /* 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: 36px;
  --text-h2: 24px;
  --text-body: 14px;
  --radius-base: 8px;
  --radius-button: 8px;
  --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 #A48FFF — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #0F0F1A;
  --surface: #1B1B27;
  --border: #2E2E3A;
  --text: #E2E2F5;
  --text-muted: #9191A1;
  --primary: #A48FFF;  /* primary brand / action color. */
  --accent: #A48FFF;  /* 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: #A48FFF;  /* inline text links — shares the action color. */
  --button-bg: #A48FFF;  /* primary-button fill — the main call-to-action color. */
  --button-text: #0F0F1A;
  --font-heading: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 8px;
  --radius-button: 8px;
}
/* fonts: Inter — free, on Google. */