Base44
A high-contrast, AI-app-builder interface built on pure black and white with a single electric lime-green accent. The system reads as confident developer-tool minimalism — near-monochrome canvas, generous negative space, and a chartreuse signal color (#ade900) reserved for primary actions and brand moments. Black is the dominant ink and a frequent full-bleed surface; lime is the only chromatic voltage in an otherwise grayscale world.
Works with
Claude Code·Cursor·Codex·Gemini CLI·Copilot·v0·Lovable·Bolt·Windsurf·Replit
Color Palette
Accent
Neutrals
Typography
display-xl
64px · 600 · 1.05
The quick brown fox jumps
display-lg
48px · 600 · 1.1
The quick brown fox jumps
display-md
36px · 600 · 1.15
The quick brown fox jumps
title-md
18px · 600 · 1.4
The quick brown fox jumps
title-sm
16px · 600 · 1.4
The quick brown fox jumps
body-md
16px · 400 · 1.5
The quick brown fox jumps
body-sm
14px · 400 · 1.5
The quick brown fox jumps
caption
13px · 500 · 1.4
The quick brown fox jumps
button
14px · 600 · 1
The quick brown fox jumps
nav-link
14px · 500 · 1.4
The quick brown fox jumps
Spacing & Shape
Spacing
| Name | Value | Preview |
|---|---|---|
| xxs | 4px | |
| xs | 8px | |
| sm | 12px | |
| md | 16px | |
| lg | 24px | |
| xl | 32px | |
| xxl | 48px | |
| section | 96px |
Border Radius
| Name | Value | Preview |
|---|---|---|
| xs | 4px | |
| sm | 6px | |
| md | 8px | |
| lg | 12px | |
| xl | 16px | |
| pill | 9999px | |
| full | 9999px |
FAQ
- What colors does Base44 use?
- Base44's core palette includes #000000, #0f0f0f, #ffffff, #f2f3f5, #e6e6e6. The full color set with usage roles (canvas, ink, surfaces, accent, semantic) is documented in the Base44 DESIGN.md.
- What font does Base44 use?
- Base44'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 Base44 design system?
- A high-contrast, AI-app-builder interface built on pure black and white with a single electric lime-green accent. The system reads as confident developer-tool minimalism — near-monochrome canvas, gen…