MozaikaDesign system

Amplitude — Design System

light · modern · high · tailwind · confidence 92% · deep decode

Amplitude runs product analytics in all-Gellix: 60px/700 'See what users do. Improve what matters.' in ink #1F1F1F, 16-18px working text, and 6px-radius buttons. Chart UI in the brand's blue-violet range supplies the color while the geometric sans keeps the enterprise pitch crisp — measurement software that presents its own site like a well-instrumented funnel.

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/ds/amplitude.

Tokens

Amplitude's decoded design system: background #FFFFFF, text #000000, accent #000000, link #BCD0FB, primary #1E61F0; type scale h1 60px / h2 40px / body 16px; 4px spacing base; 8px 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#FFFFFF
surface#EFEFEF
border#D8D8D8
text#000000
text_muted#606060
primary#1E61F0
accent#000000
link#BCD0FB
secondary#B0C8FA
button_bg#000000
button_text#FFFFFF

Using these colors

Typography

Spacing

Radii

Shadows (elevation)

Motion

Micro-interactions run at 300ms (dominant) with cubic-bezier(0.4, 0, 0.2, 1).

Native design tokens

TokenValue
--font-ibm-plex-sans"__IBM_Plex_Sans_6d343d","__IBM_Plex_Sans_Fallback_6d343d"
--font-ibm-plex-serif"__IBM_Plex_Serif_bddae2","__IBM_Plex_Serif_Fallback_bddae2"
--head-nav-height4rem
--benchmark-section-filter-container-height4rem
--sheen-x100%
--sheen-y0px

Button states (measured)

Layout (measured)

Motion choreography (measured)

Load order: span.inline-block → div.animate-fade-in → span.block×8 → nav.relative×2 → a.btn×4 → div.overflow-hidden×24

Responsive (measured)

Per-section tokens (11)

Export: DESIGN.md

# Amplitude — Design System

> light, modern, high, tailwind — deep decode (measured live)

Amplitude runs product analytics in all-Gellix: 60px/700 'See what users do. Improve what matters.' in ink #1F1F1F, 16-18px working text, and 6px-radius buttons. Chart UI in the brand's blue-violet range supplies the color while the geometric sans keeps the enterprise pitch crisp — measurement software that presents its own site like a well-instrumented funnel.

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#EFEFEF` |
| border | `#D8D8D8` |
| text | `#000000` |
| text_muted | `#606060` |
| primary | `#1E61F0` |
| accent | `#000000` |
| link | `#BCD0FB` |
| secondary | `#B0C8FA` |
| button_bg | `#000000` |
| button_text | `#FFFFFF` |

**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`, `button_bg` are all `#000000` — one role, not several (your action color).
- **accent** `#000000` — 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** `#1E61F0` — a brand color — but the call-to-action uses #000000, not this.
- **link** `#BCD0FB` — fails contrast on the background (~1.5:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
- **secondary** `#B0C8FA` — 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` 76.7% · `#6781CF` 8.4% · `#080D1D` 8.1% · `#EFEFF2` 6.8%

## Typography

- Heading: **Gellix** _(free fallback: Newsreader)_
- Body: **Gellix** _(free fallback: Newsreader)_
- Mono: **IBM Plex Mono** _(measured)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 60px / 700 · lh 70px · tracking -1px |
| h2 | 44px / 600 · lh 51px · tracking -0.22px |
| h3 | 38px / 700 · lh 42px · tracking -1.14px |
| body | 14px / 400 · lh 19px |
| small | 13px / 400 · lh 19px |

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

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

## Spacing
- base unit: 4px (inferred from the measured scale)
- measured scale: 2px, 7px, 8px, 10px, 12px, 14px, 15px, 16px, 20px, 24px — snap all gaps/padding to these
- section rhythm: 96px top/bottom padding per section (measured)

## Radius
- base: 8px
- button: 30px
- card: 6px
- pill: 9999px
- sharp: 3px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#1E61F0` / `#FFFFFF` | none | 30px | 12px 30px 12px 30px | 600 16px | none |
| secondary | `#000000` / `#FFFFFF` | 1px solid rgb(0, 0, 0) | 9999px | 0px 16px 0px 16px | 600 16px / -0.04px | none |

**States (measured, not guessed)**

- primary hover: background `#1709E9`
- primary focus: outline `1px auto rgb(16, 16, 16)`
- transition: `all 0.25s ease`

## Shadows (elevation)
- subtle: `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0.1) 0px 10px 15px -3px, rgba(0, 0, 0, 0.1) 0px 4px 6px -4px`
- card: `rgba(0, 0, 0, 0.1) 0px 0px 15px 5px`
- overlay: `rgba(0, 0, 0, 0.35) 0px 5px 15px 0px`

## Motion
- durations: 300ms (dominant) · 200ms · 150ms
- easings: `cubic-bezier(0.4, 0, 0.2, 1)` (dominant) · `ease`
- animated properties: background-color, opacity, color, border-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 |
|-------|-------|
| `--font-ibm-plex-sans` | `"__IBM_Plex_Sans_6d343d","__IBM_Plex_Sans_Fallback_6d343d"` |
| `--font-ibm-plex-serif` | `"__IBM_Plex_Serif_bddae2","__IBM_Plex_Serif_Fallback_bddae2"` |
| `--head-nav-height` | `4rem` |
| `--benchmark-section-filter-container-height` | `4rem` |
| `--sheen-x` | `100%` |
| `--sheen-y` | `0px` |

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

## Layout (measured)
- container max 1140px · common grid: 2-col
- nav: 81px

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 139 | 1011 | — | — | 0/0 | — |
| 1150 | 1271 | 2 | 64 | 0/0 | — |
| 2421 | 767 | — | — | 0/0 | — |
| 3188 | 1952 | — | — | 128/96 | — |

## Motion choreography (measured)
Load order: `span.inline-block` @0ms → `div.animate-fade-in` @0ms → `span.block`×8 @89ms → `nav.relative`×2 @512ms → `a.btn`×4 @512ms → `div.overflow-hidden`×24 @512ms
- `div.animate-fade-in` — opacity 0→1 — 600ms ease
- `span.block` ×8 — opacity 0→1 — 200ms ease (delay 50ms)
- `span.inline-block` — opacity 1→1 — 800ms steps(1) · loops

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

## Components (measured)
- link: #1E61F0 · underline

## Responsive (measured)
- breakpoints: 375px · 380px · 400px · 480px · 641px · 768px
- mobile (390px): hero 16px · 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.

---

> **Decoded with Mozaika** — measured live, not guessed. Full decoded design system + one-command install: mozaika.design/ds/amplitude

Export: Tailwind v4 (@theme)

@theme {
  /* action color #000000 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #FFFFFF;
  --color-surface: #EFEFEF;
  --color-border: #D8D8D8;
  --color-text: #000000;
  --color-text-muted: #606060;
  --color-primary: #1E61F0;  /* a brand color — but the call-to-action uses #000000, not this. */
  --color-accent: #000000;  /* 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. */
  --color-link: #BCD0FB;  /* fails contrast on the background (~1.5:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference). */
  --color-secondary: #B0C8FA;  /* 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. */
  --color-button-bg: #000000;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FFFFFF;
  /* fonts: Gellix may be proprietary — safe free fallback: Newsreader (Google Fonts). */
  --font-heading: "Gellix", "Newsreader", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Gellix", "Newsreader", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  /* measured weights: 400, 500, 600, 700 — use these, not 400/600 */
  --text-hero: 60px; --font-weight-hero: 700; --leading-hero: 70px; --tracking-hero: -1px;
  --text-h2: 44px; --font-weight-h2: 600; --leading-h2: 51px; --tracking-h2: -0.22px;
  --text-h3: 38px; --font-weight-h3: 700; --leading-h3: 42px; --tracking-h3: -1.14px;
  --text-body: 14px; --font-weight-body: 400; --leading-body: 19px;
  --text-small: 13px; --font-weight-small: 400; --leading-small: 19px;
  --radius-base: 8px;
  --radius-button: 30px;
  --radius-card: 6px;
  --radius-pill: 9999px;
  --radius-sharp: 3px;
  --shadow-card: rgba(0, 0, 0, 0.1) 0px 0px 15px 5px;
  --shadow-overlay: rgba(0, 0, 0, 0.35) 0px 5px 15px 0px;
  --shadow-subtle: rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0.1) 0px 10px 15px -3px, rgba(0, 0, 0, 0.1) 0px 4px 6px -4px;
  --color-btn-hover: #1709E9;  /* measured primary hover fill */
  --outline-focus: 1px auto rgb(16, 16, 16);  /* measured focus ring */
  --ease-brand: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;  /* use: duration-[var(--duration-fast)] */
  --duration-base: 200ms;
  --duration-slow: 300ms;
  --section-y: 96px;  /* per-section vertical padding (measured) */
  --spacing: 4px;  /* measured base — drives the p-*/gap-* scale. steps seen on the page: 2, 7, 8, 10, 12, 14, 15, 16, 20, 24px */
}

Export: CSS variables

:root {
  /* action color #000000 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #FFFFFF;
  --surface: #EFEFEF;
  --border: #D8D8D8;
  --text: #000000;
  --text-muted: #606060;
  --primary: #1E61F0;  /* a brand color — but the call-to-action uses #000000, not this. */
  --accent: #000000;  /* 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. */
  --link: #BCD0FB;  /* fails contrast on the background (~1.5:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference). */
  --secondary: #B0C8FA;  /* 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. */
  --button-bg: #000000;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FFFFFF;
  --font-heading: "Gellix", "Newsreader", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Gellix", "Newsreader", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --text-hero: 60px; --weight-hero: 700; --leading-hero: 70px; --tracking-hero: -1px;
  --text-h2: 44px; --weight-h2: 600; --leading-h2: 51px; --tracking-h2: -0.22px;
  --text-h3: 38px; --weight-h3: 700; --leading-h3: 42px; --tracking-h3: -1.14px;
  --text-body: 14px; --weight-body: 400; --leading-body: 19px;
  --text-small: 13px; --weight-small: 400; --leading-small: 19px;
  --radius: 8px;
  --radius-button: 30px;
  --radius-card: 6px;
  --radius-pill: 9999px;
  --radius-sharp: 3px;
  --shadow-card: rgba(0, 0, 0, 0.1) 0px 0px 15px 5px;
  --shadow-overlay: rgba(0, 0, 0, 0.35) 0px 5px 15px 0px;
  --shadow-subtle: rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0.1) 0px 10px 15px -3px, rgba(0, 0, 0, 0.1) 0px 4px 6px -4px;
  --btn-bg-hover: #1709E9;
  --focus-ring: 1px auto rgb(16, 16, 16);
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-base: 200ms;
  --duration-slow: 300ms;
  --section-y: 96px;
}

/* their own tokens, verbatim from the site's :root */
:root {
  --font-ibm-plex-sans: "__IBM_Plex_Sans_6d343d","__IBM_Plex_Sans_Fallback_6d343d";
  --font-ibm-plex-serif: "__IBM_Plex_Serif_bddae2","__IBM_Plex_Serif_Fallback_bddae2";
  --head-nav-height: 4rem;
  --benchmark-section-filter-container-height: 4rem;
  --sheen-x: 100%;
  --sheen-y: 0px;
}
/* fonts: Gellix may be proprietary — safe free fallback: Newsreader (Google Fonts). */