Fastly's design system is a performance-driven, developer-focused system built to empower teams to build, deliver, and secure applications at the edge with unmatched speed and reliability.
Fastly®
Built around the core proposition of "Build, deliver, and secure apps at the edge," the interface uses a clean, technical aesthetic anchored by a signature purple (#FF331F? No, it's actually #FF331F? Actually Fastly's brand color is a vibrant red-orange: #FF331F). The Fastly brand is known for its bold red-orange (#FF331F) that communicates energy, speed, and innovation — a constant presence that builds recognition while maintaining clarity. The typography is crisp and highly legible, with Inter as the primary typeface, a contemporary open-source sans-serif designed for computer screens, providing a consistent, legible, and friendly typographic voice. Every design decision — from the responsive layout system and accessible component library to the semantic color tokens and consistent motion principles — reinforces the brand's promise of making edge computing feel simple, powerful, and accessible to developers everywhere.
The system excels in creating a sense of clarity and purpose through consistent visual cues: clear hierarchy, purposeful whitespace, and logical interaction patterns that guide users through complex edge workflows. The result is a design language that feels both powerful and approachable, transforming edge technology into tools that enable faster, more secure application delivery at global scale.