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Fey — decoded design system

fey.com · dark · professional · custom · deep decode — measured live

Fey'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/fey.com.

Decoded design system

Fey's decoded design system: background #FAFAFA, text #595959, accent #479FFA, link #1C1C1C, primary #868F97; type scale h1 21px / h2 26px / body 14px; 12px spacing base; 14px base radius. The single interactive/action color is #000000 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

RoleValue
bg#FAFAFA
surface#F0F0F0
border#E1E1E1
text#595959
text_muted#969696
primary#868F97
accent#479FFA
link#1C1C1C
secondary#D88036
button_bg#000000
button_text#1C1C1C

Using these colors

Typography

Spacing

Radii

Motion

Micro-interactions run at 600ms (dominant) with ease-out.

Native design tokens

TokenValue
--ink#595959
--ink-bright#1c1c1c
--easecubic-bezier(0.16, 1, 0.3, 1)

Button states (measured)

Layout (measured)

Motion choreography (measured)

Load order: divspan.leadspan.word×83 → a.link×5 → img.signatures

Responsive (measured)

Install it

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

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

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

Export: DESIGN.md

# Fey — Design System

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

## Colors

| Role | Value |
|------|-------|
| bg | `#FAFAFA` |
| surface | `#F0F0F0` |
| border | `#E1E1E1` |
| text | `#595959` |
| text_muted | `#969696` |
| primary | `#868F97` |
| accent | `#479FFA` |
| link | `#1C1C1C` |
| secondary | `#D88036` |
| button_bg | `#000000` |
| button_text | `#1C1C1C` |

**Using these colors**

- **Action color** `#000000` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- **accent** `#479FFA` — accent for emphasis — keep it rare on the page.
- **primary** `#868F97` — a neutral UI color (chips, tags, icon fills, chrome), not the action color (action = #000000).
- **link** `#1C1C1C` — reads as a neutral UI color, not a link accent — verify against the reference (action = #000000).
- **secondary** `#D88036` — 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): `#FAFAFA` 94.2% · `#8E8E8E` 1.4% · `#ECECEC` 1.1% · `#B6B6B6` 1.1%

## Typography

- Heading: **Calibre** _(free fallback: Newsreader)_
- Body: **Calibre** _(free fallback: Newsreader)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 21px / 600 · lh 33px · tracking -0.21px |

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

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

## Spacing
- base unit: 12px
- scale: 6px, 12px, 18px, 24px, 36px, 48px, 72px, 96px

## Radius
- base: 14px
- button: 0px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `rgba(0, 0, 0, 0)` / `#1C1C1C` | none | 0px | 0px 0px 0px 0px | 700 21px / -0.21px | none |
| secondary | `#191919` / `#FFFFFF` | none | 0px | — | — | none |

**States (measured, not guessed)**

- primary focus: outline `1px auto rgb(16, 16, 16)`
- transition: `background-size 0.35s cubic-bezier(0.16, 1, 0.3, 1)`

## Motion
- durations: 600ms (dominant) · 350ms · 400ms
- easings: `ease-out` (dominant) · `cubic-bezier(0.16, 1, 0.3, 1)`
- animated properties: background-size, gap

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 |
|-------|-------|
| `--ink` | `#595959` |
| `--ink-bright` | `#1c1c1c` |
| `--ease` | `cubic-bezier(0.16, 1, 0.3, 1)` |

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

## Layout (measured)
- nav: 108px absolute

## Motion choreography (measured)
Load order: `div` @0ms → `span.lead` @0ms → `span.word`×83 @24ms → `a.link`×5 @274ms → `img.signatures` @907ms
- `div` — opacity 0→1 — 2400ms cubic-bezier(0.16, 1, 0.3, 1)
- `span.lead` — opacity 0→1 · filter blur(8px)→blur(0px) — 600ms ease-out
- `span.word` ×22 — opacity 0→1 · filter blur(8px)→blur(0px) — 600ms ease-out (delay 38ms)

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

## Components (measured)
- link: #1C1C1C · no underline

## Responsive (measured)
- mobile (390px): 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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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 Fey's publicly-visible CSS (colors, fonts, spacing, motion) — not affiliated with fey.com. No screenshots stored. Removal requests: hello@mozaika.design.