Butter Brand Identity

A complete profile of Butter's visual system — colors, typography, components, and personality.

Quick Facts

Color Palette

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

Typography

• primary: Work Sans — Work Sans
• heading: Nunito Sans — Nunito Sans

Visual Assets

• Logo:
• Favicon:

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: Source
• Butter Blog
  • Image:
  • Source: Source
• The Messy World of “Deterministic Agents”
  • Image:
  • Source: Source

Working with these fonts

Not found on Google Fonts? Agent Instructions that you can follow if you have permission to use the fonts:

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

{
 "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
   }
 }
}