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Courier — decoded design system

courier.com · dark · modern · custom · deep decode — measured live

Courier'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/courier.com.

Decoded design system

Courier's decoded design system: background #0A0A0A, text #ECECEE, accent #0000EE, link #083218, primary #0000EE; type scale h1 64px / h2 40px / body 16px; 4px spacing base; 12px base radius. The single interactive/action color is #E2E2E2 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

RoleValue
bg#0A0A0A
surface#171717
border#2B2B2C
text#ECECEE
text_muted#969697
primary#0000EE
accent#0000EE
link#083218
secondary#00B046
button_bg#E2E2E2
button_text#0000EE

Using these colors

Typography

Spacing

Radii

Shadow

rgba(0, 0, 0, 0.12) 0px 1px 1px 0px

Shadows (elevation)

Motion

Micro-interactions run at 5000ms (dominant) with ease-in-out.

Button states (measured)

Layout (measured)

Motion choreography (measured)

Load order: span.framer-text×21

Responsive (measured)

Install it

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

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

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

Export: DESIGN.md

# Courier — Design System

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

## Colors

| Role | Value |
|------|-------|
| bg | `#0A0A0A` |
| surface | `#171717` |
| border | `#2B2B2C` |
| text | `#ECECEE` |
| text_muted | `#969697` |
| primary | `#0000EE` |
| accent | `#0000EE` |
| link | `#083218` |
| secondary | `#00B046` |
| button_bg | `#E2E2E2` |
| button_text | `#0000EE` |

**Using these colors**

- **Action color** `#E2E2E2` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `primary`, `accent` are all `#0000EE` — one role, not several.
- **accent** `#0000EE` — accent for emphasis — keep it rare on the page.
- **link** `#083218` — 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** `#00B046` — 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): `#0A0A0A` 75.4% · `#1C182A` 16.1% · `#6F6B82` 8.4%

## Typography

- Heading: **Mona Sans** _(free fallback: Newsreader)_
- Body: **Mona Sans Variable** _(free fallback: Newsreader)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 64px / 400 · lh 70px · tracking -1.92px |
| h2 | 40px / 400 · lh 48px · tracking -0.4px |
| body | 16px / 400 · lh 22px · tracking 0.16px |
| small | 14px / 400 · lh 24px · tracking 0.14px |

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

> **Fonts —** Mona Sans may be proprietary — safe free fallback: Newsreader (Google Fonts). Mona Sans Variable may be proprietary — safe free fallback: Newsreader (Google Fonts).

## Spacing
- base unit: 4px (inferred from the measured scale)
- measured scale: 4px, 6px, 8px, 10px, 12px, 16px, 20px, 24px, 28px, 40px — snap all gaps/padding to these

## Radius
- base: 12px
- button: 6px
- card: 8px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `rgba(255, 255, 255, 0.88)` / `#0000EE` | none | 6px | 0px 12px 0px 12px | 400 12px | rgba(0, 0, 0, 0.12) 0px 1px 1px 0px |
| secondary | `rgba(255, 255, 255, 0.04)` / `#0000EE` | none | 6px | 0px 12px 0px 12px | 400 12px | rgba(0, 0, 0, 0.12) 0px 1px 1px 0px |

**States (measured, not guessed)**

- primary hover: background `#FFFFFF`
- primary focus: outline `1px auto rgb(16, 16, 16)`
- secondary hover: background `rgba(255, 255, 255, 0.08)`

## Shadows (elevation)
- subtle: `rgba(0, 0, 0, 0.12) 0px 1px 1px 0px`
- card: `rgba(0, 0, 0, 0.25) 0px 0.602187px 0.602187px -1.25px, rgba(0, 0, 0, 0.22) 0px 2.28853px 2.28853px -2.5px, rgba(0, 0, 0, 0.09) 0px 10px 10px -3.75px`
- button: `rgba(0, 0, 0, 0.12) 0px 1px 1px 0px`

## Motion
- durations: 5000ms (dominant)
- easings: `ease-in-out` (dominant)

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 1280px
- nav: 56px relative · bg #0A0A0A

## Motion choreography (measured)
Load order: `span.framer-text`×21 @0ms
- `ul` ×2 — transform translateX(0px)→translateX(1602px) — 13930ms · loops

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

## Responsive (measured)
- breakpoints: 800px · 1000px · 1279px
- mobile (390px): hero 32px · body 12px · 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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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 Courier's publicly-visible CSS (colors, fonts, spacing, motion) — not affiliated with courier.com. No screenshots stored. Removal requests: hello@mozaika.design.