# HumanLayer Brand Identity

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

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

## Quick Facts

| Field | Value |
|---|---|
| Primary | #FD5799 |
| Accent | #FD5799 |
| Body Font | IBM Plex Mono |
| Heading Font | IBM Plex Mono |

## Color Palette

- primary: #FD5799
- secondary: #9CA3AF
- accent: #FD5799
- background: #181818
- textPrimary: #181818
- link: #3B82F6

## Typography

- primary: IBM Plex Mono — https://fonts.google.com/specimen/IBM+Plex+Mono
- heading: IBM Plex Mono — https://fonts.google.com/specimen/IBM+Plex+Mono

## Visual Assets

- Favicon: https://www.humanlayer.dev/favicon.ico?favicon.b590251f.ico
- Social card (og:image): https://humanlayer.dev/images/og-humanlayer-code-fd.png

## UI Components

- input: background=#222222, textColor=#EEEEEE, borderColor=#FD5799, borderRadius=0px, shadow=rgb(255, 255, 255) 0px 0px 0px 0px, rgba(59, 130, 246, 0.5) 0px 0px 0px 2px, rgba(0, 0, 0, 0) 0px 0px 0px 0px
- buttonPrimary: background=#FD5799, textColor=#181818, borderColor=#FD5799, borderRadius=0px, shadow=none
- buttonSecondary: background=transparent, textColor=#EEEEEE, borderColor=#333333, borderRadius=0px, shadow=none

## Brand Personality

Tone: modern · Energy: medium · Audience: developers and tech enthusiasts

## HumanLayer Brand in the Wild

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

- **12 Factor Agents | HumanLayer Blog**
  - Image: https://www.humanlayer.dev/blog/12-factor-agents/1a0-small-focused-agents.png
  - Source: https://www.humanlayer.dev/blog/12-factor-agents
- **Writing a good CLAUDE.md | HumanLayer Blog**
  - Image: https://humanlayer.dev/api/writing-a-good-claude-md/og
  - Source: https://www.humanlayer.dev/blog/writing-a-good-claude-md
- **12 Factor Agents | HumanLayer Blog**
  - Image: https://www.humanlayer.dev/blog/12-factor-agents/140-tools-are-just-structured-outputs.png
  - Source: https://www.humanlayer.dev/blog/12-factor-agents
- **A Brief History of Ralph | HumanLayer Blog**
  - Image: https://www.humanlayer.dev/blog/brief-history-of-ralph/ralph-blog.jpg
  - Source: https://www.humanlayer.dev/blog/brief-history-of-ralph
- **Advanced Context Engineering for Coding Agents | HumanLayer Blog**
  - Image: https://www.humanlayer.dev/blog/advanced-context-engineering/intentional-compaction.png
  - Source: https://www.humanlayer.dev/blog/advanced-context-engineering
- **A Brief History of Ralph | HumanLayer Blog**
  - Image: https://humanlayer.dev/api/brief-history-of-ralph/og
  - Source: https://www.humanlayer.dev/blog/brief-history-of-ralph

## 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": "dark",
  "fonts": [
    {
      "family": "IBM Plex Mono",
      "role": "monospace"
    }
  ],
  "colors": {
    "primary": "#FD5799",
    "secondary": "#9CA3AF",
    "accent": "#FD5799",
    "background": "#181818",
    "textPrimary": "#181818",
    "link": "#3B82F6"
  },
  "typography": {
    "fontFamilies": {
      "primary": "IBM Plex Mono",
      "heading": "IBM Plex Mono"
    },
    "fontStacks": {
      "heading": [
        "IBM Plex Mono"
      ],
      "body": [
        "ui-sans-serif",
        "system-ui",
        "sans-serif",
        "Apple Color Emoji",
        "Segoe UI Emoji",
        "Segoe UI Symbol",
        "Noto Color Emoji"
      ],
      "paragraph": [
        "IBM Plex Mono"
      ]
    },
    "fontSizes": {
      "h1": "32px",
      "h2": "16px",
      "body": "14.4px"
    }
  },
  "spacing": {
    "baseUnit": 4,
    "borderRadius": "0px"
  },
  "components": {
    "input": {
      "background": "#222222",
      "textColor": "#EEEEEE",
      "borderColor": "#FD5799",
      "borderRadius": "0px",
      "borderRadiusCorners": {
        "topLeft": "0px",
        "topRight": "0px",
        "bottomRight": "0px",
        "bottomLeft": "0px"
      },
      "shadow": "rgb(255, 255, 255) 0px 0px 0px 0px, rgba(59, 130, 246, 0.5) 0px 0px 0px 2px, rgba(0, 0, 0, 0) 0px 0px 0px 0px"
    },
    "buttonPrimary": {
      "background": "#FD5799",
      "textColor": "#181818",
      "borderColor": "#FD5799",
      "borderRadius": "0px",
      "borderRadiusCorners": {
        "topLeft": "0px",
        "topRight": "0px",
        "bottomRight": "0px",
        "bottomLeft": "0px"
      },
      "shadow": "none"
    },
    "buttonSecondary": {
      "background": "transparent",
      "textColor": "#EEEEEE",
      "borderColor": "#333333",
      "borderRadius": "0px",
      "borderRadiusCorners": {
        "topLeft": "0px",
        "topRight": "0px",
        "bottomRight": "0px",
        "bottomLeft": "0px"
      },
      "shadow": "none"
    }
  },
  "images": {
    "favicon": "https://www.humanlayer.dev/favicon.ico?favicon.b590251f.ico",
    "ogImage": "https://humanlayer.dev/images/og-humanlayer-code-fd.png"
  },
  "__llm_logo_reasoning": {
    "selectedIndex": -1,
    "reasoning": "The only candidate is a tiny icon-sized SVG, which is not suitable as a primary brand logo. No visible, medium/large logo representing 'HumanLayer' was found in the header.",
    "confidence": 0.3,
    "rejected": true,
    "source": "llm"
  },
  "__llm_button_reasoning": {
    "primary": {
      "index": 0,
      "text": "Join the Waitlist",
      "reasoning": "Button #0 'Join the Waitlist' uses the vibrant brand color #FD5799, making it the most prominent call-to-action on the page."
    },
    "secondary": {
      "index": 2,
      "text": "Previous",
      "reasoning": "Button #2 'Previous' has a transparent background, distinguishing it from the primary button's vibrant color, making it suitable as a secondary action."
    },
    "confidence": 0.95
  },
  "personality": {
    "tone": "modern",
    "energy": "medium",
    "targetAudience": "developers and tech enthusiasts"
  },
  "designSystem": {
    "framework": "tailwind",
    "componentLibrary": ""
  },
  "confidence": {
    "buttons": 0.95,
    "colors": 0.9,
    "overall": 0.925
  },
  "__llm_metadata": {
    "logoSelection": {
      "llmCalled": true,
      "llmSucceeded": true,
      "finalSource": "llm",
      "rawLogoSelection": {
        "selectedLogoIndex": -1,
        "selectedLogoReasoning": "The only candidate is a tiny icon-sized SVG, which is not suitable as a primary brand logo. No visible, medium/large logo representing 'HumanLayer' was found in the header.",
        "confidence": 0.3
      }
    },
    "buttonClassification": {
      "llmCalled": true,
      "llmSucceeded": true
    }
  }
}
```