Excalidraw — decoded design system

excalidraw.com · light · modern · custom · deep decode — measured live

Excalidraw's design system, decoded live by Mozaika: measured color roles, type scale, buttons with real hover/focus states, motion and the brand's own tokens.

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This is a static, crawlable rendering for search & AI engines. The interactive version — filters, live decode console, copy & export — is at https://mozaika.design/decode/excalidraw.com.

Decoded design system

Excalidraw's decoded design system: background #FFFFFF, text #000000, accent #FA5252, link #FA5252, primary #6965DB; type scale h1 32px / h2 24px / body 16px; 4px spacing base; 8px base radius. The single interactive/action color is #6965DB — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #6965DB — the single interactive color; only on things you click or must notice, never large fills.
• primary, button_bg are all #6965DB — one role, not several (the action color).
• accent, link are all #FA5252 — one role, not several (the action color).
• accent #FA5252 — accent for emphasis — keep it rare on the page.
• secondary #228BE6 — 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

• Heading: Assistant
• Body: Arial
• h1: 32px
• h2: 24px
• body: 16px

Spacing

• base unit: 4px
• scale: 2px, 3px, 4px, 8px, 10px, 12px, 14px, 16px, 24px, 32px

Radii

• base: 8px
• button: 8px

Shadow

rgb(255, 255, 255) 0px 0px 0px 1px

Shadows (elevation)

• subtle: rgb(255, 255, 255) 0px 0px 0px 1px
• card: rgba(0, 0, 0, 0.17) 0px 0px 1px 0px, rgba(0, 0, 0, 0.08) 0px 0px 3px 0px, rgba(0, 0, 0, 0.05) 0px 7px 14px 0px

Motion

Micro-interactions run at 500ms (dominant) with ease-in-out.

• durations: 500ms
• easings: ease-in-out
• animated properties: transform

Native design tokens

Button states (measured)

• primary hover: border 1px solid rgb(91, 87, 209) · background #5B57D1
• primary focus: box-shadow rgb(87, 83, 208) 0px 0px 0px 1px

Layout (measured)

• container max-width: 690px

Responsive (measured)

• breakpoints: 861px · 1024px
• mobile (390px): hero 32px · nav inline

Install it

Drop this measured system into any shadcn/Tailwind project in one command:

npx shadcn add mozaika.design/r/decode/excalidraw.com

registry item · or query it over MCP: get_design_system("Excalidraw")

Export: DESIGN.md

# Excalidraw — Design System

> light, modern, medium, custom — deep decode (measured live)

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#EFEFEF` |
| border | `#D8D8D8` |
| text | `#000000` |
| text_muted | `#606060` |
| primary | `#6965DB` |
| accent | `#FA5252` |
| link | `#FA5252` |
| secondary | `#228BE6` |
| button_bg | `#6965DB` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#6965DB` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `primary`, `button_bg` are all `#6965DB` — one role, not several (your action color).
- `accent`, `link` are all `#FA5252` — one role, not several.
- **accent** `#FA5252` — accent for emphasis — keep it rare on the page.
- **secondary** `#228BE6` — 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.
- **Page coverage** (full-page screenshot pixels): `#FFFFFF` 96.3% · `#ECECF3` 2.2% · `#DADADE` 0.9% · `#7C74B5` 0.5%

## Typography

- Heading: **Assistant** _(free fallback: Newsreader)_
- Body: **Arial**
- h1: 32px
- h2: 24px
- body: 16px

> **Fonts —** Assistant may be proprietary — safe free fallback: Newsreader (Google Fonts). Arial — system font, no web load needed.

## Spacing
- base unit: 4px (inferred from the measured scale)
- measured scale: 2px, 3px, 4px, 8px, 10px, 12px, 14px, 16px, 24px, 32px — snap all gaps/padding to these

## Radius
- base: 8px
- button: 8px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#6965DB` / `#FFFFFF` | 1px solid rgb(105, 101, 219) | 8px | 10px 10px 10px 10px | 400 13.3328px | rgb(255, 255, 255) 0px 0px 0px 1px |
| secondary | `rgba(0, 0, 0, 0)` / `#999999` | 1px solid rgba(0, 0, 0, 0) | 6px | 12px 12px 12px 12px | 500 14px | none |

**States (measured, not guessed)**

- primary hover: border `1px solid rgb(91, 87, 209)` · background `#5B57D1`
- primary focus: box-shadow `rgb(87, 83, 208) 0px 0px 0px 1px`
- secondary hover: background `#F1F0FF`

## Shadows (elevation)
- subtle: `rgb(255, 255, 255) 0px 0px 0px 1px`
- card: `rgba(0, 0, 0, 0.17) 0px 0px 1px 0px, rgba(0, 0, 0, 0.08) 0px 0px 3px 0px, rgba(0, 0, 0, 0.05) 0px 7px 14px 0px`
- button: `rgb(255, 255, 255) 0px 0px 0px 1px`

## Motion
- durations: 500ms (dominant)
- easings: `ease-in-out` (dominant)
- animated properties: transform

Micro-interactions use the dominant duration + easing; nothing on the page animates slower than the longest duration above — don't invent springier motion.

## Their own tokens (verbatim from :root)

| Token | Value |
|-------|-------|
| `--sab` | `0px` |
| `--sal` | `0px` |
| `--sar` | `0px` |
| `--sat` | `0px` |

Prefer these names when extending their system — it's the brand's actual vocabulary.

## Layout (measured)
- container max 690px
- nav: 0px

## Components (measured)
- disabled: bg #ECECF4 · text rgba(16, 16, 16, 0.3)

## Responsive (measured)
- breakpoints: 861px · 1024px
- mobile (390px): hero 32px · body 16px · nav: inline

## How to apply
Paste the Tailwind `@theme` (or CSS variables) as your base, then build each
section to its spec — verify every color, radius, and font against these tokens.
Hover/focus states, shadows and motion timings above are measured from the live page — match them exactly, don't re-guess them.

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An automated reading of Excalidraw's publicly-visible CSS (colors, fonts, spacing, motion) — not affiliated with excalidraw.com. No screenshots stored. Removal requests: hello@mozaika.design.