Fly.io — decoded design system

Name: Fly.io design system (live decode)
Creator: Mozaika
Keywords: design system, design tokens, Fly.io, fly.io, light, tailwind

fly.io · light · modern · tailwind · deep decode — measured live

Fly.io's design system, decoded live by Mozaika: measured color roles, type scale, buttons with real hover/focus states, motion and the brand's own 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/decode/fly.io.

Decoded design system

Fly.io's decoded design system: background #F1F2F9, text #0A0A0B, accent #7C3AED, link #FFFFFF, primary #5A4F7A; type scale h1 64px / h2 36px / body 19px; 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

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

Using these colors

Action color #7C3AED — the single interactive color; only on things you click or must notice, never large fills.
accent, button_bg are all #7C3AED — one role, not several (the 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.
link #FFFFFF — fails contrast on the background (~1.1:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
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

Heading: Mackinac
Body: Fricolage Grotesque
h1: 64px
h2: 36px
body: 19px

Spacing

base unit: 4px
scale: 8px, 10px, 12px, 16px, 20px, 24px, 28px, 32px, 40px, 64px

Radii

base: 8px
button: 8px 20px 20px 8px

Shadow

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

Shadows (elevation)

subtle: rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(91, 33, 182, 0.1) 0px 5px 5px -2px, rgba(91, 33, 182, 0.1) 0px 2px 4px -2px
card: rgb(255, 255, 255) 0px 0px 0px 0px, rgba(32, 34, 55, 0.075) 0px 0px 0px 1px, rgba(32, 34, 55, 0.05) 0px 10px 15px -3px, rgba(32, 34, 55, 0.05) 0px 4px 6px -4px

Motion

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

durations: 150ms · 200ms · 300ms
easings: cubic-bezier(0.4, 0, 0.2, 1) · ease
animated properties: color, background-color, border-color, text-decoration-color

Native design tokens

Token	Value
`--dot-size`	`6px`

Button states (measured)

primary hover: background #6D28D9
primary focus: box-shadow rgba(255, 255, 255, 0.1) 0px 0px 0px 3px, rgba(67, 56, 202, 0.25) 0px 0px 0px 1px inset · background #6D28D9

Layout (measured)

container max-width: 1200px
nav: 96px relative
common grid: 2 columns

Motion choreography (measured)

Load order: ul.shrink-0×2

Responsive (measured)

mobile (390px): hero 32px · nav inline

Install it

Drop this measured system into any shadcn/Tailwind project in one command:

npx shadcn add mozaika.design/r/decode/fly.io

registry item · or query it over MCP: get_design_system("Fly.io")

Export: DESIGN.md

# Fly.io — Design System

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

## Colors

| Role | Value |
|------|-------|
| bg | `#F1F2F9` |
| surface | `#E3E4EA` |
| border | `#CECFD5` |
| text | `#0A0A0B` |
| text_muted | `#616265` |
| primary | `#5A4F7A` |
| accent | `#7C3AED` |
| link | `#FFFFFF` |
| 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`, `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.
- **link** `#FFFFFF` — fails contrast on the background (~1.1:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
- **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.
- **Page coverage** (full-page screenshot pixels): `#F3F4FA` 68.5% · `#7E6CA9` 11.7% · `#C8BBC6` 11.5% · `#D6E4F1` 8.2%

## Typography

- Heading: **Mackinac** _(free fallback: Newsreader)_
- Body: **Fricolage Grotesque** _(free fallback: Newsreader)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 64px / 500 · lh 74px · tracking -2.88px |
| h2 | 36px / 500 · lh 48px · tracking -0.9px |
| body | 19px / 325 · lh 29px |
| small | 18px / 325 · lh 27px |
| eyebrow | 12px / 500 · tracking 0.3px |

- Weight ladder: 325 · 450 · 500 · 575 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** Mackinac may be proprietary — safe free fallback: Newsreader (Google Fonts). Fricolage Grotesque may be proprietary — safe free fallback: Newsreader (Google Fonts).

## Spacing
- base unit: 4px (inferred from the measured scale)
- measured scale: 8px, 10px, 12px, 16px, 20px, 24px, 28px, 32px, 40px, 64px — snap all gaps/padding to these
- section rhythm: 128px top/bottom padding per section (measured)

## Radius
- base: 8px
- button: 8px 20px 20px 8px
- card: 16px
- pill: 9999px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#7C3AED` / `#FFFFFF` | none | 8px 20px 20px 8px | 0px 12px 0px 10px | 450 14.5px | rgba(67, 56, 202, 0.25) 0px 0px 0px 1px inset, rgba(0, 0, 0, 0) 0px 0px 0px 0px |
| secondary | `#8B5CF6` / `#FFFFFF` | none | 9999px | — | — | none |

**States (measured, not guessed)**

- primary hover: background `#6D28D9`
- primary focus: box-shadow `rgba(255, 255, 255, 0.1) 0px 0px 0px 3px, rgba(67, 56, 202, 0.25) 0px 0px 0px 1px inset` · background `#6D28D9`
- transition: `all 0.2s ease`

## Shadows (elevation)
- subtle: `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(91, 33, 182, 0.1) 0px 5px 5px -2px, rgba(91, 33, 182, 0.1) 0px 2px 4px -2px`
- card: `rgb(255, 255, 255) 0px 0px 0px 0px, rgba(32, 34, 55, 0.075) 0px 0px 0px 1px, rgba(32, 34, 55, 0.05) 0px 10px 15px -3px, rgba(32, 34, 55, 0.05) 0px 4px 6px -4px`
- button: `rgba(67, 56, 202, 0.25) 0px 0px 0px 1px inset, rgba(0, 0, 0, 0) 0px 0px 0px 0px`

## Motion
- durations: 150ms (dominant) · 200ms · 300ms
- easings: `cubic-bezier(0.4, 0, 0.2, 1)` (dominant) · `ease`
- animated properties: color, background-color, border-color, text-decoration-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 |
|-------|-------|
| `--dot-size` | `6px` |

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

## Layout (measured)
- container max 1200px · common grid: 2-col
- nav: 96px relative

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 1000 | 561 | 2 | 64 | 0/0 | — |
| 1561 | 602 | 2 | 64 | 128/128 | — |
| 2164 | 548 | 2 | 64 | 128/128 | — |
| 2712 | 548 | 2 | 64 | 128/128 | — |
| 3260 | 563 | — | — | 0/0 | — |
| 3823 | 568 | 2 | 80 | 128/128 | — |
| 4391 | 643 | 2 | 64 | 128/128 | — |

## Motion choreography (measured)
Load order: `ul.shrink-0`×2 @0ms

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

## Components (measured)
- link: #FFFFFF · no underline

## Responsive (measured)
- mobile (390px): hero 32px · body 16px · 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.

← All decoded design systems

An automated reading of Fly.io's publicly-visible CSS (colors, fonts, spacing, motion) — not affiliated with fly.io. No screenshots stored. Removal requests: hello@mozaika.design.