Stack-Auth
A developer-first authentication product surface rendered almost entirely in near-black dark mode (#131316 canvas) with crisp white headlines in Geist Sans, an indigo-violet accent spectrum (#6b5df7 family), and inverted white pill CTAs. The system reads as precise modern-dev-tooling — code windows shown in-card, generous vertical rhythm, rounded-pill buttons, and a faint cool-toned glow lighting the hero. Brand voltage comes from the violet/blue accent gradient prism and from real product UI fragments shown inside dark cards.
Works with
Claude Code·Cursor·Codex·Gemini CLI·Copilot·v0·Lovable·Bolt·Windsurf·Replit
Color Palette
Accent
Neutrals
Typography
display-xl
72px · 600 · 1.0
The quick brown fox jumps
display-lg
48px · 600 · 1.0
The quick brown fox jumps
title
18px · 500 · 1.556
The quick brown fox jumps
body
14px · 400 · 1.429
The quick brown fox jumps
button
16px · 400 · 1.5
The quick brown fox jumps
Spacing & Shape
Spacing
| Name | Value | Preview |
|---|---|---|
| xxs | 4px | |
| xs | 8px | |
| sm | 12px | |
| md | 16px | |
| lg | 24px | |
| xl | 32px | |
| xxl | 40px | |
| huge | 64px | |
| section | 128px |
Border Radius
| Name | Value | Preview |
|---|---|---|
| xs | 4px | |
| sm | 6px | |
| md | 8px | |
| lg | 12px | |
| xl | 16px | |
| pill | 9999px | |
| full | 9999px |
FAQ
- What colors does Stack-Auth use?
- Stack-Auth's core palette includes #ffffff, #a0a0ab, #aeaeb6, #9e9ea8, #e4e4e7. The full color set with usage roles (canvas, ink, surfaces, accent, semantic) is documented in the Stack-Auth DESIGN.md.
- What font does Stack-Auth use?
- Stack-Auth's primary typeface is Geist Sans. 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 Stack-Auth design system?
- A developer-first authentication product surface rendered almost entirely in near-black dark mode (#131316 canvas) with crisp white headlines in Geist Sans, an indigo-violet accent spectrum (#6b5df7…