# Substrate Brand Identity

A complete profile of **Substrate**'s visual system — colors, typography, components, and personality — extracted from https://www.substrate.cc/. Built for designers, agents, and AI tools.

- Page: https://characterquilt.com/branding/substrate
- Machine-readable JSON: https://characterquilt.com/branding/substrate.json
- Per-page llms.txt: https://characterquilt.com/branding/substrate/llms.txt

## Quick Facts

| Field | Value |
|---|---|
| Primary | #3898EC |
| Accent | #000000 |
| Body Font | Arial |
| Heading Font | Geist |

## Color Palette

- primary: #3898EC
- secondary: #DC2626
- accent: #000000
- background: #FFFFFF
- textPrimary: #000000
- link: #64748B

## Typography

- primary: Arial — https://fonts.google.com/specimen/Arial
- heading: Geist — https://fonts.google.com/specimen/Geist

## Visual Assets

- Logo: https://cdn.prod.website-files.com/6943a12c7ff63aee4ba25b8b/6944589610adb84ab2e1c38a_logo.png
- Favicon: https://cdn.prod.website-files.com/6943a12c7ff63aee4ba25b8b/696a7efb5b0c0091cb7f3dc5_favicon-32x32.png
- Social card (og:image): https://cdn.prod.website-files.com/6943a12c7ff63aee4ba25b8b/698e176a4603133f9ff29193_97e3257b99ce02fc09b7c9f44f840874_og.png

## UI Components

- buttonPrimary: background=#000000, textColor=#FFFFFF, borderRadius=200px, shadow=none
- buttonSecondary: background=#FFFFFF, textColor=#000000, borderColor=#E6E6E6, borderRadius=200px, shadow=none

## Brand Personality

Tone: professional · Energy: medium · Audience: healthcare professionals

## Substrate Brand in the Wild

Real-world brand assets — ads, campaigns, marketing materials.

- **Substrate - AI Agents for Healthcare Revenue Cycle**
  - Image: https://cdn.prod.website-files.com/6943a12c7ff63aee4ba25b8b/69950d142ac9b355ff4f2ea4_Cigna-Logo.png
  - Source: https://www.substrate.cc/
- **Substrate - AI Agents for Healthcare Revenue Cycle**
  - Image: https://cdn.prod.website-files.com/6943a12c7ff63aee4ba25b8b/698c3df9fbb994a77b0d7595_7d2f97c87338cbc1382bd47e70c964e8_topo-lines.jpeg
  - Source: https://www.substrate.cc/
- **Substrate - AI Agents for Healthcare Revenue Cycle**
  - Image: https://cdn.prod.website-files.com/6943a12c7ff63aee4ba25b8b/698e176a4603133f9ff29193_97e3257b99ce02fc09b7c9f44f840874_og.png
  - Source: https://www.substrate.cc/
- **Revolve - Webflow HTML Website Template**
  - Image: https://cdn.prod.website-files.com/65b036db72974cc25f9225dd/65b040a56127d88b289cc465_photo-landscape-05_compressed.webp
  - Source: https://www.substrate.cc/landing/landing-2
- **Substrate - AI Agents for Healthcare Revenue Cycle**
  - Image: https://cdn.prod.website-files.com/6943a12c7ff63aee4ba25b8b/6944589666bc6de367617b63_logo-white.png
  - Source: https://www.substrate.cc/
- **Substrate - AI Agents for Healthcare Revenue Cycle**
  - Image: https://cdn.prod.website-files.com/6943a12c7ff63aee4ba25b8b/698d56883e8bce346f5d65dc_429a4cdfd8f880bac27ca666398fb60b_topo-dark.jpeg
  - Source: https://www.substrate.cc/

## 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:

1. Open the company's homepage in a browser with DevTools open.
2. In the Network tab, filter by "Font" (or by extension: woff2, woff, ttf, otf).
3. Hard-reload the page and click around (pricing, blog, careers) — some weights only load on specific routes.
4. For each captured font URL: right-click → Save As to download the file locally.
5. 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.

## Machine-Readable Profile

```json
{
  "colorScheme": "light",
  "fonts": [
    {
      "family": "Geist",
      "role": "heading"
    },
    {
      "family": "Arial",
      "role": "body"
    },
    {
      "family": "Inter",
      "role": "unknown"
    }
  ],
  "colors": {
    "primary": "#3898EC",
    "secondary": "#DC2626",
    "accent": "#000000",
    "background": "#FFFFFF",
    "textPrimary": "#000000",
    "link": "#64748B"
  },
  "typography": {
    "fontFamilies": {
      "primary": "Arial",
      "heading": "Geist"
    },
    "fontStacks": {
      "heading": [
        "Geist",
        "Arial",
        "sans-serif"
      ],
      "body": [
        "Geist",
        "Arial",
        "sans-serif"
      ],
      "paragraph": [
        "Geist",
        "Arial",
        "sans-serif"
      ]
    },
    "fontSizes": {
      "h1": "56px",
      "h2": "56px",
      "body": "17px"
    }
  },
  "spacing": {
    "baseUnit": 4,
    "borderRadius": "3px"
  },
  "components": {
    "buttonPrimary": {
      "background": "#000000",
      "textColor": "#FFFFFF",
      "borderRadius": "200px",
      "borderRadiusCorners": {
        "topLeft": "200px",
        "topRight": "200px",
        "bottomRight": "200px",
        "bottomLeft": "200px"
      },
      "shadow": "none"
    },
    "buttonSecondary": {
      "background": "#FFFFFF",
      "textColor": "#000000",
      "borderColor": "#E6E6E6",
      "borderRadius": "200px",
      "borderRadiusCorners": {
        "topLeft": "200px",
        "topRight": "200px",
        "bottomRight": "200px",
        "bottomLeft": "200px"
      },
      "shadow": "none"
    }
  },
  "images": {
    "logo": "https://cdn.prod.website-files.com/6943a12c7ff63aee4ba25b8b/6944589610adb84ab2e1c38a_logo.png",
    "favicon": "https://cdn.prod.website-files.com/6943a12c7ff63aee4ba25b8b/696a7efb5b0c0091cb7f3dc5_favicon-32x32.png",
    "ogImage": "https://cdn.prod.website-files.com/6943a12c7ff63aee4ba25b8b/698e176a4603133f9ff29193_97e3257b99ce02fc09b7c9f44f840874_og.png",
    "logoHref": "/",
    "logoAlt": "Logo Link that leads to home page"
  },
  "__llm_logo_reasoning": {
    "selectedIndex": 2,
    "reasoning": "Selected #0 because it is visible, located in the header, links to the homepage, and matches the brand name 'Substrate'.",
    "confidence": 0.95,
    "source": "llm"
  },
  "__llm_button_reasoning": {
    "primary": {
      "index": 0,
      "text": "Book a DemoBook a Demo",
      "reasoning": "Button #5 'Book a Demo' has a strong call-to-action text and uses a dark background color, making it stand out as a primary CTA."
    },
    "secondary": {
      "index": 12,
      "text": "View Covered Payers →View Covered Payers →",
      "reasoning": "Button #4 'View Covered Payers' has a different background color (#FFFFFF) and serves as a secondary action with informative text."
    },
    "confidence": 0.9
  },
  "personality": {
    "tone": "professional",
    "energy": "medium",
    "targetAudience": "healthcare professionals"
  },
  "designSystem": {
    "framework": "custom",
    "componentLibrary": ""
  },
  "confidence": {
    "buttons": 0.9,
    "colors": 0.9,
    "overall": 0.9
  },
  "__llm_metadata": {
    "logoSelection": {
      "llmCalled": true,
      "llmSucceeded": true,
      "finalSource": "llm",
      "rawLogoSelection": {
        "selectedLogoIndex": 0,
        "selectedLogoReasoning": "Selected #0 because it is visible, located in the header, links to the homepage, and matches the brand name 'Substrate'.",
        "confidence": 0.95
      }
    },
    "buttonClassification": {
      "llmCalled": true,
      "llmSucceeded": true
    }
  }
}
```