---
version: alpha
name: Customer.io
description: Light design system extracted from customer.io (DOM-true values, Emblematic extractor 0.2.0, 2026-11-12).
colors:
  background: "#FFFFFF"
  on-surface: "#00262B"
  surface: "#FDF0E9"
  on-surface-variant: "#032125CC"
  zest-700: "#863D1C"
  outline: "#EBEBEB"
  spruce-950: "#00191C"
  wave-50: "#E2F4FF"
  black: "#000000"
  color-10: "#00191CD9"
  color-11: "#010101B3"
  wave-700: "#123A88"
  spruce-200: "#A1C2C6"
  spruce-700: "#0B363B"
  spruce-100: "#CDE3E5"
typography:
  display-lg:
    fontFamily: Saans Font
    fontSize: 96px
    fontWeight: 475
    lineHeight: 1
    letterSpacing: 0.002em
  headline-md:
    fontFamily: Saans Font
    fontSize: 40px
    fontWeight: 475
    lineHeight: 1.125
    letterSpacing: 0.005em
  title-md:
    fontFamily: Saans Font
    fontSize: 18px
    fontWeight: 500
    lineHeight: 1.375
    letterSpacing: 0.011em
  body-md:
    fontFamily: Saans Font
    fontSize: 16px
    fontWeight: 475
    lineHeight: 1.375
    letterSpacing: 0.013em
  body-sm:
    fontFamily: Saans Font
    fontSize: 14px
    fontWeight: 475
    lineHeight: 1.375
    letterSpacing: 0.014em
  label-md:
    fontFamily: Saans Font
    fontSize: 16px
    fontWeight: 600
    lineHeight: 1.375
rounded:
  sm: 2px
  md: 4px
  full: 9999px
spacing:
  xxs: 4px
  xs: 6px
  sm: 8px
  md: 10px
  lg: 12px
  xl: 16px
  2xl: 24px
  3xl: 32px
  4xl: 40px
  5xl: 60px
  6xl: 64px
  7xl: 96px
  base: 4px
  container: 1320px
components:
  button-primary:
    backgroundColor: "{colors.spruce-700}"
    textColor: "{colors.background}"
    rounded: "{rounded.full}"
    padding: 8px
    height: 40px
    typography: "{typography.label-md}"
  button-secondary:
    textColor: "{colors.on-surface}"
    rounded: "{rounded.full}"
    padding: 8px
    height: 40px
    typography: "{typography.label-md}"
---

# Customer.io

> Extracted from [https://customer.io/](https://customer.io/) on 2026-11-12 by Emblematic. Every value below was read from the rendered DOM (computed styles, `document.fonts`, and the fonts Chrome actually used to paint text), not estimated from pixels. When the YAML front matter and this prose disagree, the YAML wins. Copy values from this file exactly; don't transcribe them from memory. Don't copy logos, imagery, illustrations or marketing copy.

## Overview

Customer.io uses a light canvas (#FFFFFF) with a palette. Type is set in **Saans Font** (display + body), with 16px body text. Layout: 1320px container, none-detected navigation, 10 sections. Built with next.js, tailwind, radix-ui, shadcn/ui, sanity, google-tag-manager, vercel.

## Colors

Area-weighted from painted backgrounds, text and borders on the 1440px light capture. Roles are inferred from usage (largest background, most text, interactive fills). Every hex is an exact computed value; a role marked *unverified* is a best guess that has not passed review, so its canonical token (e.g. `primary`) is left out of the front matter.

| Token | Hex | OKLCH | Role | Share of paint | CSS variable |
|---|---|---|---|---|---|
| `background` | `#FFFFFF` | 1 0 201.8 | bg | 53.2% | `--color-white` |
| `on-surface` | `#00262B` | 0.245 0.042 207.2 | text | 15.1% | `--fg` |
| `surface` | `#FDF0E9` | 0.963 0.017 50 | surface | 2.9% | `--color-zest-50` |
| `on-surface-variant` | `#032125CC` (on bg `#354D51`) | 0.228 0.036 207.5 | muted | 0.91% | — |
| `zest-700` | `#863D1C` | 0.451 0.11 43 | accent *(unverified)* | 0.56% | `--color-zest-700` |
| `outline` | `#EBEBEB` | 0.94 0 180 | border | 0.40% | `--border` |
| `spruce-950` | `#00191C` | 0.195 0.033 205.3 | other | 16.7% | `--color-spruce-950` |
| `wave-50` | `#E2F4FF` | 0.958 0.024 234.4 | other | 2.9% | `--color-wave-50` |
| `black` | `#000000` | 0 0 0 | other | 2.4% | `--color-black` |
| `color-10` | `#00191CD9` (on bg `#263B3E`) | 0.195 0.033 205.3 | other | 1.9% | — |
| `color-11` | `#010101B3` (on bg `#4D4D4D`) | 0.063 0.001 203.8 | other | 0.66% | — |
| `wave-700` | `#123A88` | 0.373 0.138 262 | other | 0.49% | `--color-wave-700` |
| `spruce-200` | `#A1C2C6` | 0.79 0.036 205.6 | other | 0.46% | `--color-spruce-200` |
| `spruce-700` | `#0B363B` | 0.307 0.046 206.3 | other | 0.41% | `--color-spruce-700` |
| `spruce-100` | `#CDE3E5` | 0.9 0.024 204.8 | other | 0.30% | `--color-spruce-100` |

**Accent not verified.** The best candidate is `#863D1C` (most-used chromatic color on controls, links and text, confidence 0.55). Treat it as a guess until reviewed.

Sparse chromatic highlights (not accents): `#866006` (`--color-mustard-700`).

Declared brand/accent tokens: `--color-accent` = `#866006`, `--stroke-accent` = `#ABFFAE`, `--surface-accent` = `#ABFFAE`, `--color-on-accent` = `#BDFFBD`.

Contrast: text on background 16.82:1, muted text 8.96:1.

Gradients in use: `radial-gradient(circle, oklab(0.228 -0.0319411 -0.0166062 / 0.7) 1px, rgba(0, 0, 0, 0) 1px)`.

The site does not change under `prefers-color-scheme: dark`.

## Typography

| Family | Role | Weights | Share of text | Source |
|---|---|---|---|---|
| **Saans Font** (CSS: `saansFont`) | display, body | 475, 500, 600 | 100.0% | webfont |

Scale (px): 12, 14, 16, 18, 20, 24, 30, 40, 64, 96. Effective ratio ≈ 1.292. Body 16px at line-height 1.375; display 96px with tracking 0.002em. Headings are sentence case. On a 390px viewport the body is 16px and display 56px.

## Layout

Spacing follows a 4px base unit; the most used steps are 4, 6, 8, 10, 12, 16, 24, 32, 40, 60, 64, 96px. Sections open with about 161px of space before their first line of text. Content sits in a 1320px container on a 12-column grid. Text density 0.073 (text area / page area).

Section order (desktop). Kinds below the review threshold are shown as *section*:

1. **section** (48px, bg #032125)
2. **hero** — “More impact from every” (1529px, bg #FFFFFF)
3. **section** — “Built for agents, not just humans” (682px, bg #FFFFFF)
4. **section** — “Everything you need to engage customers” (863px, bg #FFFFFF)
5. **section** — “Meet your AI Agent” (688px, bg #FFFFFF)
6. **section** — “Support every stage of the customer journey” (1020px, bg #FFFFFF)
7. **section** — “Infrastructure built for teams and the agents that support them” (1410px, bg #00191C)
8. **section** — “Trusted to power billions of customer interactions” (1288px, bg #FFFFFF)
9. **logos** — “Optimize your messaging” (739px, bg #FFFFFF)
10. **footer** (750px, bg #00191C)

## Shapes

Dominant corner radius 0px; radii in use: 2px, 4px, pill. Borders: hairline (1px).

## Components

- **button-primary**: backgroundColor `#0B363B`, textColor `#FFFFFF`, rounded `9999px`, padding `8px 20px`, height `40px`, fontFamily `saansFont`, fontSize `14px`, fontWeight `600`, border `2px solid #0B363B`, shadow `oklch(0.9263 0.136 145.2) 0px 0px 0px 4px`
- **button-secondary**: textColor `#00262B`, rounded `9999px`, padding `8px 20px`, height `40px`, fontFamily `saansFont`, fontSize `14px`, fontWeight `600`, border `2px solid #0B363B`, shadow `oklch(0.97 0 0) 0px 0px 0px 4px`

## Do's and Don'ts

- Do set body copy in Saans Font at 16px / 1.375.
- Don't introduce font weights beyond 475, 500, 600.
- Don't add drop shadows; depth comes from tone and borders.
- Do keep corners at 0px for most controls, and use the larger radii only for cards and media.
- Do snap spacing to multiples of 4px.
- Don't copy this site's logos, illustrations, photography or copy; use the system, not the brand assets.

## Provenance

Spec v2, extractor 0.2.0. Render quality: **ok**. Vision pass: not run. Fields below confidence 0.7 are hedged or left out above: `color.accent_strategy`, `color.roles.accent`, `layout.columns`, `layout.hero`, `layout.section_count`, `sections[].kind`, `space.section_padding_px`. Full per-field provenance is in `spec.json`.