Mercury — decoded design system

mercury.com · dark · professional · tailwind · deep decode — measured live

Mercury'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/mercury.com.

Decoded design system

Mercury's decoded design system: background #171721, text #000000, accent #5266EB, link #EDEDF3, primary #323649; type scale h1 65px / h2 49px / body 16px; 8px spacing base; 4px base radius. The single interactive/action color is #5266EB — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #5266EB — the single interactive color; only on things you click or must notice, never large fills.
• accent, secondary, button_bg are all #5266EB — one role, not several (the action color).
• accent #5266EB — 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 #323649 — a brand color — but the call-to-action uses #5266EB, not this.
• link #EDEDF3 — reads as a neutral UI color, not a link accent — verify against the reference (action = #5266EB).

Typography

• Heading: Arcadia Display
• Body: Arcadia
• h1: 65px
• h2: 49px
• body: 16px

Spacing

• base unit: 8px
• scale: 2px, 4px, 8px, 12px, 16px, 20px, 24px, 25px, 32px, 40px

Radii

• base: 4px
• button: 32px

Motion

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

• durations: 150ms · 300ms · 500ms
• easings: cubic-bezier(0.4, 0, 0.2, 1) · cubic-bezier(0, 0, 0.2, 1)
• animated properties: color, background-color, border-color, outline-color

Native design tokens

…and 110 more measured on the page.

Button states (measured)

• primary hover: background #4354C8
• primary focus: background #4354C8 · outline 2px solid rgb(156, 180, 232)

Layout (measured)

• container max-width: 1020px
• nav: 72px relative, backdrop blur(10px)
• common grid: 16 columns

Motion choreography (measured)

Load order: div.pointer-events-none → div.group/content×2 → div.pointer-events-none×2 → div.group/content → div.group/asset-container×4 → small.block×2

Scroll reveal: 3 elements rest at opacity 0, animate in over 300ms.

Stagger: div ×6 — 600ms apart.

Overlay recipe (measured)

dialog panel: rgba(0, 0, 0, 0) · radius 0px

Input (measured)

height 46px · radius 32px 0px 0px 32px

Responsive (measured)

• breakpoints: 640px · 768px · 1024px · 1280px · 1536px
• mobile (390px): hero 28px · nav hamburger

Install it

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

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

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

Export: DESIGN.md

# Mercury — Design System

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

## Colors

| Role | Value |
|------|-------|
| bg | `#171721` |
| surface | `#15151F` |
| border | `#13131C` |
| text | `#000000` |
| text_muted | `#08080C` |
| primary | `#323649` |
| accent | `#5266EB` |
| link | `#EDEDF3` |
| secondary | `#5266EB` |
| button_bg | `#5266EB` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#5266EB` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `accent`, `secondary`, `button_bg` are all `#5266EB` — one role, not several (your action color).
- **accent** `#5266EB` — 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** `#323649` — a brand color — but the call-to-action uses #5266EB, not this.
- **link** `#EDEDF3` — reads as a neutral UI color, not a link accent — verify against the reference (action = #5266EB).
- **Page coverage** (full-page screenshot pixels): `#171721` 93.6% · `#EDEDF3` 3% · `#494A59` 2.4% · `#AAADC8` 1%

## Typography

- Heading: **Arcadia Display** _(free fallback: Hanken Grotesk)_
- Body: **Arcadia** _(free fallback: Hanken Grotesk)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 65px / 480 · lh 72px |
| h2 | 49px / 480 · lh 54px |
| h3 | 42px / 480 · lh 48px · tracking 0.42px |
| body | 16px / 400 · lh 22px |
| small | 12px / 480 · lh 17px · tracking 0.24px |

- Weight ladder: 360 · 400 · 420 · 480 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** Arcadia Display is proprietary — closest free match: Hanken Grotesk (Google). Load Hanken Grotesk; keep Arcadia Display first so licensed users still get it. Arcadia is proprietary — closest free match: Hanken Grotesk (Google). Load Hanken Grotesk; keep Arcadia first so licensed users still get it.

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 2px, 4px, 8px, 12px, 16px, 20px, 24px, 25px, 32px, 40px — snap all gaps/padding to these

## Radius
- base: 4px
- button: 32px
- card: 4px
- pill: 9999px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#5266EB` / `#FFFFFF` | none | 32px | 0px 20px 0px 20px | 420 16px | none |
| secondary | `#323649` / `#EDEDF3` | none | 40px | — | — | none |

**States (measured, not guessed)**

- primary hover: background `#4354C8`
- primary focus: background `#4354C8` · outline `2px solid rgb(156, 180, 232)`
- transition: `color 0.3s cubic-bezier(0, 0, 0.2, 1)`

## Motion
- durations: 150ms (dominant) · 300ms · 500ms
- easings: `cubic-bezier(0.4, 0, 0.2, 1)` (dominant) · `cubic-bezier(0, 0, 0.2, 1)`
- animated properties: color, background-color, border-color, outline-color

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 |
|-------|-------|
| `--color-orange-base-800` | `#38231a` |
| `--color-green-magic-400` | `#77c599` |
| `--color-orange-magic-400-alpha-3` | `#fc9b6f33` |
| `--color-neutral-base-50` | `#fbfcfd` |
| `--color-green-magic-400-alpha-3` | `#77c59933` |
| `--color-blue-magic-400` | `#77becf` |
| `--color-red-magic-600-alpha-5` | `#d0327538` |
| `--surface-input-active` | `#fbfcfd` |
| `--color-neutral-magic-400-alpha-5` | `#afb2ce5c` |
| `--color-orange-magic-600` | `#c45000` |
| `--color-purple-magic-600-alpha-5` | `#5266eb38` |
| `--text-default-inverted` | `#ededf3` |

_…and 108 more measured on the page._

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

## Layout (measured)
- container max 1020px · common grid: 16-col
- nav: 72px relative · backdrop blur(10px) · bg #B2B2B5

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 0 | 900 | — | — | 0/0 | — |
| 900 | 972 | — | — | 0/0 | — |
| 1872 | 393 | 16 | 32 | 0/0 | — |
| 2265 | 668 | 16 | 32 | 0/0 | — |
| 2933 | 1130 | — | — | 0/0 | — |
| 4063 | 338 | 16 | 32 | 0/0 | — |
| 4402 | 732 | — | — | 0/0 | — |

## Motion choreography (measured)
Load order: `div.pointer-events-none` @0ms → `div.group/content`×2 @0ms → `div.pointer-events-none`×2 @0ms → `div.group/content` @0ms → `div.group/asset-container`×4 @0ms → `small.block`×2 @918ms
- `div.group/content` ×2 — opacity 1→0 · filter blur(0px)→blur(4px) — 500ms cubic-bezier(0.25, 0.46, 0.45, 0.94) (delay -600ms)
- `div.pointer-events-none` ×2 — opacity 1→0 · translate 0px→0px -5px — 300ms ease-in-out (delay -600ms)
- `div.pointer-events-none` — opacity 0→1 · translate 0px 5px→0px — 300ms ease-in-out (delay -600ms)
- `small.block` — translate 0px→0px 100% — 1000ms
- `small.block` — opacity 1→0 — 1000ms
- `div.group/asset-container` ×4 — opacity 1→0 · filter blur(0px)→blur(4px) — 500ms cubic-bezier(0.25, 0.46, 0.45, 0.94)
- stagger: `div` ×6 — 600ms apart
- scroll reveal: 3 elements rest at opacity 0, animate in over 300ms (3 revealed during the drive).
- overlay dialog (auto-opened): panel rgba(0, 0, 0, 0) · r 0px

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

## Components (measured)
- input: h 46px · r 32px 0px 0px 32px · bg rgba(0, 0, 0, 0) · placeholder #EDEDF3
- link: #EDEDF3 · underline — hover #C3C3CC
- disabled: bg rgba(0, 0, 0, 0) · text #000000

## Responsive (measured)
- breakpoints: 640px · 768px · 1024px · 1280px · 1536px
- mobile (390px): hero 28px · 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.

← All decoded design systems

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