---
version: alpha
name: A farewell to Arc
description: Light design system extracted from arc.net (DOM-true values, Emblematic extractor 0.2.0, 2026-11-12).
colors:
  background: "#FFFFFF"
  primary: "#0B0B0B"
  on-surface-variant: "#7F7F7F"
  on-surface: "#000000"
  outline: "#0000001C"
  color-6: "#000000D9"
  color-7: "#F5F5F5D6"
  color-8: "#F7F7F7"
  color-9: "#FFFFFF1F"
  on-primary: "#FFFFFF"
typography:
  display-lg:
    fontFamily: Exposure
    fontSize: 76px
    fontWeight: 600
    lineHeight: 1.13
    letterSpacing: -0.032em
  headline-md:
    fontFamily: ABC Oracle
    fontSize: 20px
    fontWeight: 350
    lineHeight: 1.42
    letterSpacing: -0.02em
  body-md:
    fontFamily: ABC Oracle
    fontSize: 21px
    fontWeight: 350
    lineHeight: 1.42
    letterSpacing: -0.03em
  label-md:
    fontFamily: ABC Oracle
    fontSize: 17px
    fontWeight: 350
    lineHeight: 1
    letterSpacing: -0.015em
  mono-md:
    fontFamily: ABC Favorit Mono
    fontSize: 13px
    fontWeight: 400
    lineHeight: 1.059
    letterSpacing: 0.14em
rounded:
  xs: 5px
  sm: 8px
  md: 10px
  lg: 12px
  xl: 16px
  full: 9999px
spacing:
  xxs: 3px
  xs: 4px
  sm: 4.5px
  md: 6px
  lg: 8px
  xl: 9px
  2xl: 10px
  3xl: 12px
  4xl: 18px
  5xl: 24px
  6xl: 25px
  7xl: 31px
  8xl: 185.5px
  container: 1069px
components:
  button-primary:
    backgroundColor: "{colors.primary}"
    textColor: "{colors.background}"
    rounded: "{rounded.lg}"
    padding: 0px
    height: 60px
    typography: "{typography.label-md}"
  card:
    backgroundColor: "{colors.color-8}"
    rounded: "{rounded.lg}"
    padding: 0px
---

# A farewell to Arc

> Extracted from [https://arc.net/](https://arc.net/) 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

A farewell to Arc uses a light canvas (#FFFFFF) with a monochrome palette led by #0B0B0B. Type is set in **ABC Oracle**, **Exposure** (display), **ABC Favorit Mono** (mono), with 21px body text. Layout: 1069px container, none-detected navigation, 7 sections. Built with next.js, vercel, cloudflare.

## 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 0 | bg | 54.4% | `--colors-lowContrast` |
| `primary` | `#0B0B0B` | 0.15 0 0 | accent | 40.0% | — |
| `on-surface-variant` | `#7F7F7F` | 0.596 0 0 | muted | 1.7% | — |
| `on-surface` | `#000000` | 0 0 0 | text | 1.3% | `--colors-highContrast` |
| `outline` | `#0000001C` (on bg `#E3E3E3`) | 0 0 0 | border | 0.12% | — |
| `color-6` | `#000000D9` (on bg `#262626`) | 0 0 0 | other | 0.94% | — |
| `color-7` | `#F5F5F5D6` (on bg `#F7F7F7`) | 0.97 0 0 | other | 0.58% | — |
| `color-8` | `#F7F7F7` | 0.976 0 0 | other | 0.33% | — |
| `color-9` | `#FFFFFF1F` (on bg `#FFFFFF`) | 1 0 0 | other | 0.07% | — |

Declared brand/accent tokens: `--colors-brandRed` = `#FB3A4D` (declared, not painted on this page), `--colors-brandBlue` = `#3139FB` (declared, not painted on this page), `--colors-brandDeepBlue` = `#2404AA` (declared, not painted on this page).

Contrast: text on background 21:1, muted text 4:1, accent 19.68:1.

Gradients in use: `linear-gradient(rgba(245, 245, 245, 0.84), rgba(245, 245, 245, 0.84)), linear-gradient(rgb(255, 255, 255) 80px, rgba(255, 255, 255, 0) 200px`; `linear-gradient(color(srgb 0.552941 0.482353 1 / 0.16), color(srgb 0.552941 0.482353 1 / 0.16)), linear-gradient(rgba(0, 0, 0, 0), rgba(0, 0`.

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

## Typography

| Family | Role | Weights | Share of text | Source |
|---|---|---|---|---|
| **ABC Oracle** | body | 350 | 73.0% | webfont |
| **Exposure** (CSS: `Exposure VAR`) | display | 600 | 17.6% | webfont |
| **SF Pro (system-ui)** (CSS: `-apple-system`) | other | 350, 500, 600 | 8.8% | system (stack `-apple-system, "system-ui", "SF Pro Text", "Helvetica Neue",`, resolved on macos) |
| **ABC Favorit Mono** | mono | 400 | 0.30% | webfont |

Declared in `@font-face` but not used to paint text on this page: Marlin Soft SQ, Space Mono, Inter, Marlin Soft Basic, Söhne Breit, EB Garamond. Don't treat these as the page's fonts.

Scale (px): 13, 14, 17, 18, 20, 21, 22, 38, 64, 76. Effective ratio ≈ 1.379 (close to a augmented fourth). Body 21px at line-height 1.42; display 76px with tracking -0.032em. Headings are sentence case. On a 390px viewport the body is 18px and display 52px.

## Layout

Spacing has no reliable single base unit; the most used steps are 3, 4, 4.5, 6, 8, 9, 10, 12, 18, 24, 25, 31, 185.5px. Sections open with about 179px of space before their first line of text. Content sits in a 1069px container on a 2-column grid. Text density 0.094 (text area / page area).

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

1. **hero** — “A farewell to Arc” (900px, bg #0B0B0B)
2. **section** — “We’ve decided to sunset Arc on December 22, 2026” (903px, bg #0B0B0B)
3. **logos** (1009px, bg #0B0B0B)
4. **section** — “Timeline” (656px, bg #FFFFFF)
5. **section** — “Folders come along, too” (1238px, bg #FFFFFF)
6. **faq** — “Questions” (981px, bg #FFFFFF)
7. **footer** (535px, bg #FFFFFF)

## Elevation & Depth

Style: subtle. Most used shadows:

- `rgba(0, 0, 0, 0.05) 0.5px 1px 4px 0px inset`
- `rgba(0, 0, 0, 0.05) 0.35px 0.7px 2.8px 0px inset`
- `rgb(255, 255, 255) 0px 4px 4px 0px inset, rgb(210, 210, 210) 0px 3px 0px 0px`

## Shapes

Dominant corner radius 10px; radii in use: 5px, 8px, 10px, 12px, 16px, pill. Borders: hairline (1px).

## Components

- **button-primary**: backgroundColor `#0B0B0B`, textColor `#FFFFFF`, rounded `12px`, padding `0px 24px`, height `60px`, fontFamily `ABC Oracle`, fontSize `18px`, fontWeight `350` (e.g. “Download Dia”)
- **card**: rounded `12px`, padding `0px`, backgroundColor `#F7F7F7`, shadow `rgba(0, 0, 0, 0.1) 0px 0px 0px 0.5px inset, rgba(0, 0, 0, 0.05) 0.35px 0.7px 2.8px 0px inset`

## Do's and Don'ts

- Do reserve `#0B0B0B` for primary actions and highlights; it covers only 40.0% of the painted page.
- Do keep the palette monochrome; there is no chromatic brand accent on the page.
- Do set body copy in ABC Oracle at 21px / 1.42.
- Do use Exposure only for display sizes, not for body text.
- Do tighten large headlines (-0.032em at 76px).
- Don't introduce font weights beyond 350, 400, 500, 600.
- Do keep corners at 10px for most controls, and use the larger radii only for cards and media.
- 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: `layout.columns`, `layout.hero`, `layout.section_count`, `sections[].kind`, `space.base`, `space.section_padding_px`. Full per-field provenance is in `spec.json`.