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Plausible — decoded design system

plausible.io · light · professional · tailwind · deep decode — measured live

Plausible'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.

Open in Mozaika →

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/plausible.io.

Decoded design system

Plausible's decoded design system: background #F9FAFB, text #252F3F, accent #5850EC, link #D2D6DC, primary #252F3F; type scale h1 48px / h2 36px / body 16px; 8px spacing base; 4px base radius. The single interactive/action color is #5850EC — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

RoleValue
bg#F9FAFB
surface#ECEDEF
border#D9DBDE
text#252F3F
text_muted#757C86
primary#252F3F
accent#5850EC
link#D2D6DC
secondary#161E2E
button_bg#5850EC
button_text#FFFFFF

Using these colors

Typography

Spacing

Radii

Shadows (elevation)

Motion

Micro-interactions run at 150ms (dominant) with cubic-bezier(0.4, 0, 0.2, 1).

Button states (measured)

Layout (measured)

Motion choreography (measured)

Load order: label.cursor-pointer×2 → label.cursor-pointer×2 → a.mt-4×3 → a.mt-4×3 → a.mt-4×3 → a.mt-4×3

Responsive (measured)

Install it

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

npx shadcn add mozaika.design/r/decode/plausible.io

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

Export: DESIGN.md

# Plausible — Design System

> light, professional, medium, tailwind — deep decode (measured live)

## Colors

| Role | Value |
|------|-------|
| bg | `#F9FAFB` |
| surface | `#ECEDEF` |
| border | `#D9DBDE` |
| text | `#252F3F` |
| text_muted | `#757C86` |
| primary | `#252F3F` |
| accent | `#5850EC` |
| link | `#D2D6DC` |
| secondary | `#161E2E` |
| button_bg | `#5850EC` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#5850EC` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `accent`, `button_bg` are all `#5850EC` — one role, not several (your action color).
- **accent** `#5850EC` — THE accent / action color — interactive & must-notice only (buttons, links, focus, one key highlight); never large fills or backgrounds. Scarcity is what makes it read as designed.
- **primary** `#252F3F` — ≈ the text color — a foreground/text color, not an action color (action = #5850EC).
- **link** `#D2D6DC` — fails contrast on the background (~1.4:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
- **secondary** `#161E2E` — 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): `#F9FAFB` 94.3% · `#A6A6D7` 5.7%

## Typography

- Heading: **Roboto**
- Body: **Roboto**

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 48px / 800 · lh 48px · tracking -1.2px |
| h2 | 36px / 800 · lh 40px · tracking -0.9px |
| h3 | 30px / 700 · lh 32px · tracking -0.75px |
| body | 16px / 400 · lh 24px |
| small | 14px / 400 · lh 21px |
| eyebrow | 14px / 600 · tracking 0.7px |

- Weight ladder: 400 · 500 · 600 · 700 · 800 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** Roboto — free, on Google.

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 4px, 8px, 10px, 12px, 16px, 20px, 24px, 32px, 40px, 48px — snap all gaps/padding to these
- section rhythm: 96px top/bottom padding per section (measured)

## Radius
- base: 4px
- button: 6px
- card: 6px
- pill: 9999px
- sharp: 3px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#5850EC` / `#FFFFFF` | 1px solid rgba(0, 0, 0, 0) | 6px | 8px 20px 8px 20px | 500 16px | none |
| secondary | `#FFFFFF` / `#5850EC` | 1px solid rgba(0, 0, 0, 0) | 6px | 16px 40px 16px 40px | 500 18px | none |

**States (measured, not guessed)**

- primary hover: background `#6875F5`
- primary focus: box-shadow `rgba(118, 169, 250, 0.45) 0px 0px 0px 3px` · outline `2px solid rgba(0, 0, 0, 0)`
- secondary hover: color `#6875F5`
- transition: `background-color 0.15s cubic-bezier(0.4, 0, 0.2, 1)`

## Shadows (elevation)
- subtle: `rgba(0, 0, 0, 0.1) 0px 1px 3px 0px, rgba(0, 0, 0, 0.06) 0px 1px 2px 0px`
- card: `rgba(0, 0, 0, 0.1) 0px 4px 6px -1px, rgba(0, 0, 0, 0.06) 0px 2px 4px -1px`
- overlay: `rgba(0, 0, 0, 0.25) 0px 25px 50px -12px`

## Motion
- durations: 150ms (dominant) · 200ms
- easings: `cubic-bezier(0.4, 0, 0.2, 1)` (dominant)
- animated properties: background-color, border-color, color, fill

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

## Layout (measured)
- container max 1120px · common grid: 3-col
- nav: 104px relative

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 216 | 346 | — | — | 0/80 | — |
| 562 | 851 | — | — | 0/0 | — |
| 981 | 1252 | — | — | 96/96 | — |
| 2233 | 878 | 3 | 16 | 24/48 | — |
| 3111 | 1500 | — | — | 96/96 | — |
| 4611 | 839 | 3 | 32 | 0/0 | 21/26/53 |

## Motion choreography (measured)
Load order: `label.cursor-pointer`×2 @0ms → `label.cursor-pointer`×2 @0ms → `a.mt-4`×3 @0ms → `a.mt-4`×3 @0ms → `a.mt-4`×3 @0ms → `a.mt-4`×3 @0ms

Rebuild the timeline, not just the durations — order, delays and staggers above are the choreography.

## Components (measured)
- link: #3182CE · underline — hover #2C5282

## Responsive (measured)
- breakpoints: 640px · 768px · 1024px · 1280px
- mobile (390px): hero 30px · body 16px · nav: hamburger

## 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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Mozaika is an MCP-native design-reference library for AI coding agents: real products decoded into measured design systems, full-page screens, sliced sections with per-section specs, and ordered user flows. Connect your agent over MCP.

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