Fly.io — design system & UI screens

Dev Tools · 1 screen · 11 sections · https://fly.io/

Platform for building and deploying code with serverless compute capabilities, featuring an illustrated hero section with the tagline "Build fast. Run any code fearlessly." The design uses a vertical scrolling layout with alternating sections: a full-width hero with navigation, followed by feature sections with text and illustrations (Modern Compute, Sandboxes, Storage, Networking, supported tools), a purple CTA section "Use the Tech You Love," a comparison section for agents on edge platforms, partner logos, and enterprise readiness callout. Footer contains company links and social icons.

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/website/fly-io.

Decoded design system

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

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; only on things you click or must notice, never large fills.
accent, link, 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.
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: 8px, 10px, 12px, 16px, 20px, 24px, 28px, 32px, 40px, 64px

Radii

base: 8px
button: 9999px

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

Full design system, per-section tokens & DESIGN.md / Tailwind / CSS exports →

Screens

Landing Page – Build Fast, Run Code Fearlessly