MozaikaDesign system

Fly.io — Design System

light · modern · high · tailwind · confidence 92%

Fly.io writes infrastructure docs like a storybook: P22 Mackinac serif at 64px/500 in blurple-navy #281950, 19px body, violet #7C3AED buttons with the signature lopsided 8/20/20/8 radius, and hot-air-balloon illustrations over hard engineering copy. The whimsy is load-bearing — it's how a bare-metal platform tells developers the sharp edges are intentional and documented.

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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/fly-io.

Tokens

Fly.io's decoded design system: background #F1F2F9, text #0A0A0B, accent #7C3AED, link #7C3AED, primary #5A4F7A; type scale h1 64px / h2 36px / body 18px; 4px spacing base; 8px base radius. The single interactive/action color is #7C3AED — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

RoleValue
bg#F1F2F9
surface#E3E4EA
border#CECFD5
text#0A0A0B
text_muted#616265
primary#5A4F7A
accent#7C3AED
link#7C3AED
secondary#281950
button_bg#7C3AED
button_text#FFFFFF

Using these colors

Typography

Spacing

Radii

Shadow

rgba(67, 56, 202, 0.25) 0px 0px 0px 1px inset, rgba(0, 0, 0, 0) 0px 0px 0px 0px

Per-section tokens (11)

Export: DESIGN.md

# Fly.io — Design System

> light, modern, high, tailwind

Fly.io writes infrastructure docs like a storybook: P22 Mackinac serif at 64px/500 in blurple-navy #281950, 19px body, violet #7C3AED buttons with the signature lopsided 8/20/20/8 radius, and hot-air-balloon illustrations over hard engineering copy. The whimsy is load-bearing — it's how a bare-metal platform tells developers the sharp edges are intentional and documented.

## Colors

| Role | Value |
|------|-------|
| bg | `#F1F2F9` |
| surface | `#E3E4EA` |
| border | `#CECFD5` |
| text | `#0A0A0B` |
| text_muted | `#616265` |
| primary | `#5A4F7A` |
| accent | `#7C3AED` |
| link | `#7C3AED` |
| secondary | `#281950` |
| button_bg | `#7C3AED` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#7C3AED` — 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`, `button_bg` are all `#7C3AED` — one role, not several (your action color).
- **accent** `#7C3AED` — 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** `#5A4F7A` — a brand color — but the call-to-action uses #7C3AED, not this.
- **secondary** `#281950` — 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

- h1: 64px
- h2: 36px
- body: 18px

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

## Radius
- base: 8px
- button: 9999px

## Primary button
- bg `#7C3AED` · text `#FFFFFF` · radius 9999px

## 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 #7C3AED — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #F1F2F9;
  --color-surface: #E3E4EA;
  --color-border: #CECFD5;
  --color-text: #0A0A0B;
  --color-text-muted: #616265;
  --color-primary: #5A4F7A;  /* a brand color — but the call-to-action uses #7C3AED, not this. */
  --color-accent: #7C3AED;  /* 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: #7C3AED;  /* inline text links — shares the action color. */
  --color-secondary: #281950;  /* 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: #7C3AED;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FFFFFF;
  --text-h1: 64px;
  --text-h2: 36px;
  --text-body: 18px;
  --radius-base: 8px;
  --radius-button: 9999px;
  --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 #7C3AED — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #F1F2F9;
  --surface: #E3E4EA;
  --border: #CECFD5;
  --text: #0A0A0B;
  --text-muted: #616265;
  --primary: #5A4F7A;  /* a brand color — but the call-to-action uses #7C3AED, not this. */
  --accent: #7C3AED;  /* 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: #7C3AED;  /* inline text links — shares the action color. */
  --secondary: #281950;  /* 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: #7C3AED;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FFFFFF;
  --radius: 8px;
  --radius-button: 9999px;
}