MozaikaDesign system

Segment — Design System

light · professional · medium · custom · confidence 92% · deep decode

Segment signs off in Whitney SSm at 48px/700 — 'Segment ❤️ Twilio, we're finally moving in together' — with 16px body and blue #1866EE full-pill CTAs. Unified-profile diagrams in Twilio's palette complete the merger story; a CDP brand gracefully dissolving into its parent, in its parent's humanist type.

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/segment.

Tokens

Segment's decoded design system: background #FFFFFF, text #000D25, accent #1866EE, link #000D25, primary #191F36; type scale h1 48px / h2 40px / body 16px; 4px spacing base; 8px base radius. The single interactive/action color is #1866EE — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

RoleValue
bg#FFFFFF
surface#EFF0F1
border#D8DADE
text#000D25
text_muted#606877
primary#191F36
accent#1866EE
link#000D25
secondary#1866EE
button_bg#1866EE
button_text#FFFFFF

Using these colors

Typography

Spacing

Radii

Shadow

rgb(24, 102, 238) 0px 0px 0px 2px inset

Motion

Micro-interactions run at 300ms (dominant) with ease-in-out.

Native design tokens

TokenValue
--radius-small0.2rem
--radius-checkbox0.2rem
--radius-base0.4rem
--radius-large1rem
--radius-extra-large2rem
--radius-2x-large5rem
--radius-circle50%
--shadow-image0 4px 16px 0 rgb(18 28 45/0.15)
--shadow-card0 8px 24px 0 rgb(18 28 45/0.1)
--shadow-navigation0 14px 25px 0 rgb(18 28 45/0.12)

…and 64 more measured on the page.

Button states (measured)

Layout (measured)

Overlay recipe (measured)

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

Responsive (measured)

Per-section tokens (6)

Export: DESIGN.md

# Segment — Design System

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

Segment signs off in Whitney SSm at 48px/700 — 'Segment ❤️ Twilio, we're finally moving in together' — with 16px body and blue #1866EE full-pill CTAs. Unified-profile diagrams in Twilio's palette complete the merger story; a CDP brand gracefully dissolving into its parent, in its parent's humanist type.

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#EFF0F1` |
| border | `#D8DADE` |
| text | `#000D25` |
| text_muted | `#606877` |
| primary | `#191F36` |
| accent | `#1866EE` |
| link | `#000D25` |
| secondary | `#1866EE` |
| button_bg | `#1866EE` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#1866EE` — 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 `#1866EE` — one role, not several (your action color).
- **accent** `#1866EE` — 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** `#191F36` — a brand color — but the call-to-action uses #1866EE, not this.
- **link** `#000D25` — inline text links and link-styled controls.
- **Page coverage** (full-page screenshot pixels): `#000716` 42.5% · `#FFFFFF` 30.1% · `#8C8D90` 13.3% · `#E2E3E5` 7.3%

## Typography

- Heading: **Whitney SSm** _(free fallback: Newsreader)_
- Body: **Whitney SSm** _(free fallback: Newsreader)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 48px / 700 · lh 60px · tracking -1.44px |
| h2 | 40px / 700 · lh 52px · tracking -0.8px |
| h3 | 20px / 600 · lh 32px |
| body | 16px / 400 · lh 24px |
| small | 14px / 400 · lh 20px |

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

> **Fonts —** Whitney SSm 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, 24px, 32px, 48px, 64px — snap all gaps/padding to these
- section rhythm: 64px top/bottom padding per section (measured)

## Radius
- base: 8px
- button: 50px
- card: 50px
- sharp: 2px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#1866EE` / `#FFFFFF` | none | 50px | 6px 24px 6px 24px | 500 16px | rgb(24, 102, 238) 0px 0px 0px 2px inset |
| secondary | `rgba(0, 0, 0, 0)` / `#1866EE` | none | 50px | 6px 24px 6px 24px | 500 16px | rgb(24, 102, 238) 0px 0px 0px 2px inset |

**States (measured, not guessed)**

- primary hover: box-shadow `rgb(14, 62, 146) 0px 0px 0px 2px inset` · background `#0E3E92`
- primary focus: box-shadow `rgb(11, 42, 96) 0px 0px 0px 2px inset` · background `#0B2A60` · outline `2px dotted rgb(11, 42, 96)`
- transition: `background-color 0.3s ease-in-out`

## Motion
- durations: 300ms (dominant) · 200ms · 150ms
- easings: `ease-in-out` (dominant)
- animated properties: background-color, color, border-color, box-shadow

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 |
|-------|-------|
| `--radius-small` | `0.2rem` |
| `--radius-checkbox` | `0.2rem` |
| `--radius-base` | `0.4rem` |
| `--radius-large` | `1rem` |
| `--radius-extra-large` | `2rem` |
| `--radius-2x-large` | `5rem` |
| `--radius-circle` | `50%` |
| `--shadow-image` | `0 4px 16px 0 rgb(18 28 45/0.15)` |
| `--shadow-card` | `0 8px 24px 0 rgb(18 28 45/0.1)` |
| `--shadow-navigation` | `0 14px 25px 0 rgb(18 28 45/0.12)` |
| `--shadow-large` | `0 16px 60px 0 rgb(18 28 45/0.15)` |
| `--font-family-text` | `Whitney SSm,helvetica,arial,sans-serif` |

_…and 62 more measured on the page._

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

## Layout (measured)
- container max 1200px · common grid: 2-col
- nav: 112px fixed

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 111 | 604 | 2 | 48 | 64/64 | 60/40 |
| 715 | 316 | — | — | 0/32 | — |
| 1031 | 168 | — | — | 64/0 | — |
| 1303 | 876 | 2 | 48 | 0/32 | — |
| 2327 | 412 | 2 | 48 | 0/0 | — |

## Motion choreography (measured)
- 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)
- link: #FFFFFF · underline — hover #3ACEFA

## Responsive (measured)
- breakpoints: 480px · 768px · 992px · 1344px · 1600px
- mobile (390px): hero 32px · body 14px · 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/segment

Export: Tailwind v4 (@theme)

@theme {
  /* action color #1866EE — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #FFFFFF;
  --color-surface: #EFF0F1;
  --color-border: #D8DADE;
  --color-text: #000D25;
  --color-text-muted: #606877;
  --color-primary: #191F36;  /* a brand color — but the call-to-action uses #1866EE, not this. */
  --color-accent: #1866EE;  /* 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: #000D25;  /* inline text links and link-styled controls. */
  --color-secondary: #1866EE;  /* same color as the action (see accent). */
  --color-button-bg: #1866EE;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FFFFFF;
  /* fonts: Whitney SSm may be proprietary — safe free fallback: Newsreader (Google Fonts). */
  --font-heading: "Whitney SSm", "Newsreader", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Whitney SSm", "Newsreader", system-ui, -apple-system, 'Segoe UI', sans-serif;
  /* measured weights: 400, 500, 600, 700 — use these, not 400/600 */
  --text-hero: 48px; --font-weight-hero: 700; --leading-hero: 60px; --tracking-hero: -1.44px;
  --text-h2: 40px; --font-weight-h2: 700; --leading-h2: 52px; --tracking-h2: -0.8px;
  --text-h3: 20px; --font-weight-h3: 600; --leading-h3: 32px;
  --text-body: 16px; --font-weight-body: 400; --leading-body: 24px;
  --text-small: 14px; --font-weight-small: 400; --leading-small: 20px;
  --radius-base: 8px;
  --radius-button: 50px;
  --radius-card: 50px;
  --radius-sharp: 2px;
  --color-btn-hover: #0E3E92;  /* measured primary hover fill */
  --shadow-focus: rgb(11, 42, 96) 0px 0px 0px 2px inset;  /* measured focus ring */
  --ease-brand: ease-in-out;
  --duration-fast: 150ms;  /* use: duration-[var(--duration-fast)] */
  --duration-base: 200ms;
  --duration-slow: 300ms;
  --section-y: 64px;  /* per-section vertical padding (measured) */
  --spacing: 4px;  /* measured base — drives the p-*/gap-* scale. steps seen on the page: 4, 6, 8, 10, 12, 16, 24, 32, 48, 64px */
}

Export: CSS variables

:root {
  /* action color #1866EE — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #FFFFFF;
  --surface: #EFF0F1;
  --border: #D8DADE;
  --text: #000D25;
  --text-muted: #606877;
  --primary: #191F36;  /* a brand color — but the call-to-action uses #1866EE, not this. */
  --accent: #1866EE;  /* 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: #000D25;  /* inline text links and link-styled controls. */
  --secondary: #1866EE;  /* same color as the action (see accent). */
  --button-bg: #1866EE;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FFFFFF;
  --font-heading: "Whitney SSm", "Newsreader", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Whitney SSm", "Newsreader", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --text-hero: 48px; --weight-hero: 700; --leading-hero: 60px; --tracking-hero: -1.44px;
  --text-h2: 40px; --weight-h2: 700; --leading-h2: 52px; --tracking-h2: -0.8px;
  --text-h3: 20px; --weight-h3: 600; --leading-h3: 32px;
  --text-body: 16px; --weight-body: 400; --leading-body: 24px;
  --text-small: 14px; --weight-small: 400; --leading-small: 20px;
  --radius: 8px;
  --radius-button: 50px;
  --radius-card: 50px;
  --radius-sharp: 2px;
  --btn-bg-hover: #0E3E92;
  --focus-ring: rgb(11, 42, 96) 0px 0px 0px 2px inset;
  --ease: ease-in-out;
  --duration-fast: 150ms;
  --duration-base: 200ms;
  --duration-slow: 300ms;
  --section-y: 64px;
}

/* their own tokens, verbatim from the site's :root */
:root {
  --radius-small: 0.2rem;
  --radius-checkbox: 0.2rem;
  --radius-base: 0.4rem;
  --radius-large: 1rem;
  --radius-extra-large: 2rem;
  --radius-2x-large: 5rem;
  --radius-circle: 50%;
  --shadow-image: 0 4px 16px 0 rgb(18 28 45/0.15);
  --shadow-card: 0 8px 24px 0 rgb(18 28 45/0.1);
  --shadow-navigation: 0 14px 25px 0 rgb(18 28 45/0.12);
  --shadow-large: 0 16px 60px 0 rgb(18 28 45/0.15);
  --font-family-text: Whitney SSm,helvetica,arial,sans-serif;
}
/* fonts: Whitney SSm may be proprietary — safe free fallback: Newsreader (Google Fonts). */