# Butter Brand Identity

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

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

## Quick Facts

| Field | Value |
|---|---|
| Primary | #FFF9DF |
| Accent | #0A369D |
| Body Font | Work Sans |
| Heading Font | Nunito Sans |

## Color Palette

- primary: #FFF9DF
- accent: #0A369D
- background: #FFF9DF
- textPrimary: #000000
- link: #0A369D

## Typography

- primary: Work Sans — https://fonts.google.com/specimen/Work+Sans
- heading: Nunito Sans — https://fonts.google.com/specimen/Nunito+Sans

## Visual Assets

- Logo: https://www.butter.dev/logo.svg
- Favicon: https://www.butter.dev/favicon.svg

## Brand Personality

Tone: modern · Energy: medium · Audience: developers

## Butter Brand in the Wild

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

- **Automatic Template Induction with Butter**
  - Image: 
  - Source: https://blog.butter.dev/on-automatic-template-induction-for-response-caching
- **Butter Blog**
  - Image: 
  - Source: https://blog.butter.dev/
- **Automatic Template Induction with Butter**
  - Image: 
  - Source: https://blog.butter.dev/on-automatic-template-induction-for-response-caching
- **The Messy World of “Deterministic Agents”**
  - Image: 
  - Source: https://blog.butter.dev/the-messy-world-of-deterministic-agents
- **Butter Blog**
  - Image: 
  - Source: https://blog.butter.dev/
- **The Messy World of “Deterministic Agents”**
  - Image: 
  - Source: https://blog.butter.dev/the-messy-world-of-deterministic-agents

## 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": "Work Sans",
      "role": "body"
    },
    {
      "family": "Nunito Sans",
      "role": "heading"
    }
  ],
  "colors": {
    "primary": "#FFF9DF",
    "accent": "#0A369D",
    "background": "#FFF9DF",
    "textPrimary": "#000000",
    "link": "#0A369D"
  },
  "typography": {
    "fontFamilies": {
      "primary": "Work Sans",
      "heading": "Nunito Sans"
    },
    "fontStacks": {
      "heading": [
        "Nunito Sans",
        "sans-serif"
      ],
      "body": [
        "Work Sans",
        "sans-serif"
      ],
      "paragraph": [
        "Work Sans",
        "sans-serif"
      ]
    },
    "fontSizes": {
      "h1": "24px",
      "h2": "24px",
      "body": "18px"
    }
  },
  "spacing": {
    "baseUnit": 8,
    "borderRadius": "0px"
  },
  "components": {},
  "images": {
    "logo": "https://www.butter.dev/logo.svg",
    "favicon": "https://www.butter.dev/favicon.svg",
    "ogImage": null,
    "logoHref": "/",
    "logoAlt": "Butter"
  },
  "__llm_logo_reasoning": {
    "selectedIndex": 0,
    "reasoning": "Selected #0 because it is visible, medium-sized, located in the header, and links to the homepage. The alt text matches the brand name 'Butter'.",
    "confidence": 0.95,
    "source": "llm"
  },
  "personality": {
    "tone": "modern",
    "energy": "medium",
    "targetAudience": "developers"
  },
  "designSystem": {
    "framework": "custom",
    "componentLibrary": ""
  },
  "confidence": {
    "buttons": 0,
    "colors": 0.9,
    "overall": 0.45
  },
  "__llm_metadata": {
    "logoSelection": {
      "llmCalled": true,
      "llmSucceeded": true,
      "finalSource": "llm",
      "rawLogoSelection": {
        "selectedLogoIndex": 0,
        "selectedLogoReasoning": "Selected #0 because it is visible, medium-sized, located in the header, and links to the homepage. The alt text matches the brand name 'Butter'.",
        "confidence": 0.95
      }
    },
    "buttonClassification": {
      "llmCalled": false,
      "llmSucceeded": false
    }
  }
}
```