substack.json
Substack Brand Identity
A complete profile of Substack's visual system — colors, typography, components, and personality — extracted from https://substack.com. Built for designers, agents, and AI tools.
- Page: https://characterquilt.com/branding/substack
- Machine-readable JSON: https://characterquilt.com/branding/substack.json
- Per-page llms.txt: https://characterquilt.com/branding/substack/llms.txt
Quick Facts
| Field | Value |
|---|---|
| Primary | #FF6719 |
| Accent | #0083D5 |
| Body Font | Roboto |
| Heading Font | Roboto |
Color Palette
- primary: #FF6719
- accent: #0083D5
- background: #FFFFFF
- textPrimary: #363737
- link: #0083D5
Typography
- primary: Roboto — https://fonts.google.com/specimen/Roboto
- heading: Roboto — https://fonts.google.com/specimen/Roboto
Visual Assets
- Favicon:
- Social card (og:image):
UI Components
- input: background=#FFFFFF, textColor=#363737, borderColor=#E6E6E6, borderRadius=12px, shadow=none
- buttonPrimary: background=#FFFFFF, textColor=#363737, borderRadius=8px, shadow=rgba(0, 0, 0, 0.1) 0px 4px 6px -1px, rgba(0, 0, 0, 0.06) 0px 2px 4px -1px
Brand Personality
Tone: modern · Energy: medium · Audience: content creators and readers
Substack Brand in the Wild
Real-world brand assets — ads, campaigns, marketing materials.
- No One is Talking About AI's Impact on Reading
- Image:
- Source: Link
- A guide to switch your blog to Substack and grow a business
- Image:
- Source: Link
- ChinAI Newsletter | Jeffrey Ding | Substack
- Image:
- Source: Link
- Q&A: Should We Drop the Word 'Blog' in Order to Gain Credibility?
- Image:
- Source: Link
- Getting started with Live Video on Substack – Substack, Inc
- Image:
- Source: Link
- What's the carbon footprint of using ChatGPT?
- Image:
- Source: Link
Working with these fonts
Not found on Google Fonts?
Agent Instructions that you can follow if you have permission to use the fonts.
CharacterQuilt.com suggests this flow that can help:
- Open the company's homepage in a browser with DevTools open.
- In the Network tab, filter by "Font" (or by extension: woff2, woff, ttf, otf).
- Hard-reload the page and click around (pricing, blog, careers) — some weights only load on specific routes.
- For each captured font URL: right-click → Save As to download the file locally.
- View the page's CSS (DevTools → Sources, or curl the stylesheet URLs) and copy out the matching @font-face declarations. Rewrite each
src: url(...)to point to your local file path.
Programmatic alternative: load the URL with Playwright or Puppeteer, listen for response events whose Content-Type starts with font/, and write the body to disk. The CSS extraction step is the same.
Only do this if you have permission to use the brand assets — most proprietary fonts are licensed and may not be redistributable.