# Mainframe Brand Identity

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

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

## Quick Facts

| Field | Value |
|---|---|
| Primary | #EB4E3D |
| Accent | #E3D0CA |
| Body Font | PP Neue Montreal |
| Heading Font | PP Neue Montreal |

## Color Palette

- primary: #EB4E3D
- accent: #E3D0CA
- background: #E2DEDA
- textPrimary: #292929
- link: #E3D0CA

## Typography

- primary: PP Neue Montreal — https://fonts.google.com/specimen/PP+Neue+Montreal
- heading: PP Neue Montreal — https://fonts.google.com/specimen/PP+Neue+Montreal

## Visual Assets

- Favicon: https://manifesto.mainframe.inc/icon.svg
- Social card (og:image): /image/share/share-large.png

## UI Components

- input: background=transparent, textColor=#292929, borderColor=null, borderRadius=0px, shadow=none

## Brand Personality

Tone: modern · Energy: medium · Audience: tech-savvy professionals

## Mainframe Brand in the Wild

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

- **Sunset - by Jordan Singer - Mainframe**
  - Image: https://substackcdn.com/image/fetch/$s_!FDlT!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F317a6dc2-9348-46da-a3fa-21b8d53d3630_5120x2880.png
  - Source: https://blog.mainfra.me/p/sunset
- **Generative Computing - by Jordan Singer - Mainframe**
  - Image: https://substackcdn.com/image/fetch/$s_!23Ce!,w_1200,h_675,c_fill,f_jpg,q_auto:good,fl_progressive:steep,g_auto/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa030c5d7-a669-4407-90cf-919b9056f2f1_1920x1080.png
  - Source: https://blog.mainfra.me/p/generative-computing
- **Say Hello to Cobot - by Jordan Singer - Mainframe**
  - Image: https://substackcdn.com/image/fetch/$s_!W7RR!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fb730f5f0-0eae-4b0d-a1c4-9b2564235d44_5120x2880.png
  - Source: https://blog.mainfra.me/p/say-hello-to-cobot
- **Mainframe | Jordan Singer | Substack**
  - Image: https://substackcdn.com/image/fetch/$s_!iqqW!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6dd81f4d-eb86-4220-b5f8-ca7fea903ac2_5760x4320.jpeg
  - Source: https://blog.mainfra.me/
- **Cobot is available today in beta on iOS and Web**
  - Image: https://substackcdn.com/image/fetch/$s_!_Ozi!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F036c4f6a-ddcb-4b54-851c-e2e14a5e4bcc_3840x2160.png
  - Source: https://blog.mainfra.me/p/cobot-is-available-today-in-beta
- **Mainframe | Jordan Singer | Substack**
  - Image: https://substackcdn.com/image/fetch/$s_!ptdO!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F9cf2dfc2-472c-4f1f-bf3c-8cc0a7893cdd_1200x630.png
  - Source: https://blog.mainfra.me/

## 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": "PP Neue Montreal",
      "role": "body"
    }
  ],
  "colors": {
    "primary": "#EB4E3D",
    "accent": "#E3D0CA",
    "background": "#E2DEDA",
    "textPrimary": "#292929",
    "link": "#E3D0CA"
  },
  "typography": {
    "fontFamilies": {
      "primary": "PP Neue Montreal",
      "heading": "PP Neue Montreal"
    },
    "fontStacks": {
      "heading": [
        "PP Neue Montreal",
        "sans-serif"
      ],
      "body": [
        "PP Neue Montreal",
        "sans-serif"
      ],
      "paragraph": [
        "PP Neue Montreal",
        "sans-serif"
      ]
    },
    "fontSizes": {
      "h1": "9.22227px",
      "h2": "34px",
      "body": "9.22227px"
    }
  },
  "spacing": {
    "baseUnit": 4,
    "borderRadius": "2px"
  },
  "components": {
    "input": {
      "background": "transparent",
      "textColor": "#292929",
      "borderColor": null,
      "borderRadius": "0px",
      "borderRadiusCorners": {
        "topLeft": "0px",
        "topRight": "0px",
        "bottomRight": "0px",
        "bottomLeft": "0px"
      },
      "shadow": "none"
    }
  },
  "images": {
    "favicon": "https://manifesto.mainframe.inc/icon.svg",
    "ogImage": "/image/share/share-large.png"
  },
  "__llm_logo_reasoning": {
    "selectedIndex": -1,
    "reasoning": "No valid brand logo was found in the header area. The candidate provided is small and located in the body, not the header, and does not link to the homepage.",
    "confidence": 0.3,
    "rejected": true,
    "source": "llm"
  },
  "personality": {
    "tone": "modern",
    "energy": "medium",
    "targetAudience": "tech-savvy professionals"
  },
  "designSystem": {
    "framework": "custom",
    "componentLibrary": ""
  },
  "confidence": {
    "buttons": 0,
    "colors": 0.9,
    "overall": 0.45
  },
  "__llm_metadata": {
    "logoSelection": {
      "llmCalled": true,
      "llmSucceeded": true,
      "finalSource": "llm",
      "rawLogoSelection": {
        "selectedLogoIndex": -1,
        "selectedLogoReasoning": "No valid brand logo was found in the header area. The candidate provided is small and located in the body, not the header, and does not link to the homepage.",
        "confidence": 0.3
      }
    },
    "buttonClassification": {
      "llmCalled": false,
      "llmSucceeded": false
    }
  }
}
```