LaunchDarkly
A dark-mode, developer-platform interface anchored on a near-black canvas (#191919) with white display type, electric-blue primary CTAs, and a high-voltage lime-green accent. The system reads as confident, technical, and modern — oversized tightly-tracked display headlines, sharp-cornered (0px) buttons and inputs, soft-rounded dark cards (~20px) holding product-UI fragments, and a spectrum of saturated accent colors (lime, cyan, violet, periwinkle, pink) used on gradient product mockups. Brand voltage comes from the lime "Book a demo" CTA and the bold Söhne-family display type.
Works with
Claude Code·Cursor·Codex·Gemini CLI·Copilot·v0·Lovable·Bolt·Windsurf·Replit
Color Palette
Accent
Neutrals
Typography
h1
80px · 700 · 1.0
The quick brown fox jumps
h2
64px · 700 · 1.0
The quick brown fox jumps
h3
32px · 600 · 1.1
The quick brown fox jumps
body
24px · 500 · 1.4
The quick brown fox jumps
button
16px · 400 · 1.5
The quick brown fox jumps
Spacing & Shape
Spacing
| Name | Value | Preview |
|---|---|---|
| xxs | 4px | |
| xs | 6px | |
| sm | 8px | |
| md | 10px | |
| lg | 12px | |
| xl | 16px | |
| xxl | 20px | |
| xxxl | 24px | |
| huge | 31px |
Border Radius
| Name | Value | Preview |
|---|---|---|
| none | 0px | |
| xs | 2px | |
| sm | 4px | |
| md | 6px | |
| lg | 8px | |
| xl | 12px | |
| 2xl | 16px | |
| 3xl | 20px | |
| 4xl | 24px | |
| 5xl | 32px | |
| pill | 999px |
FAQ
- What colors does LaunchDarkly use?
- LaunchDarkly's core palette includes #405bff, #ffffff, #191919, #212121, #000000. The full color set with usage roles (canvas, ink, surfaces, accent, semantic) is documented in the LaunchDarkly DESIGN.md.
- What font does LaunchDarkly use?
- LaunchDarkly's primary typeface is Inter. The complete type scale (sizes, weights, line-height and letter-spacing per role), with an open substitute where the original is licensed, is documented in the DESIGN.md.
- What is the LaunchDarkly design system?
- A dark-mode, developer-platform interface anchored on a near-black canvas (#191919) with white display type, electric-blue primary CTAs, and a high-voltage lime-green accent. The system reads as conf…