Home · Branding · LangChain

LangChain Brand Identity

A website-derived reference for LangChain: observed colors, typography, components, and assets extracted from https://www.langchain.com/?ref=startups.gallery. This snapshot is not official brand guidance. Verify current values and usage permissions with the original source.

Download JSON

Primary

#CCE9FF

Accent

#7FC8FF

Body Font

Twklausanne

Heading

Aeonik

Color Palette

Brand palette extracted from https://www.langchain.com/?ref=startups.gallery.

primary

#CCE9FF

rgb(204, 233, 255)

secondary

#E5F4FF

rgb(229, 244, 255)

accent

#7FC8FF

rgb(127, 200, 255)

background

#030710

rgb(3, 7, 16)

textPrimary

#030710

rgb(3, 7, 16)

link

#7FC8FF

rgb(127, 200, 255)

Typography

Each font links to its Google Fonts page where available.

primary

Twklausanne

Twklausanne Google Fonts →

heading

Aeonik

Aeonik Google Fonts →

Twklausanne, Tahoma, sans-serif

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.

Visual Assets

Logo

Favicon

Social Card

UI Components

Live previews rendered using LangChain's actual button styles.

input

background #030710 textColor #CCE9FF borderColor #262C36 borderRadius 6.75px shadow none

buttonPrimary

background #E5F4FF textColor #030710 borderRadius 6.75px shadow none

buttonSecondary

background #030710 textColor #CCE9FF borderColor #2F4B68 borderRadius 6.75px shadow none

Brand Personality

Tone: modern Energy: medium Audience: tech professionals and AI developers

LangChain Brand in the Wild

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

Image: mintcdn.com

Source: docs.langchain.com

Image: cdn.prod.website-files.com

Source: langchain.com

Image: cdn.prod.website-files.com

Source: langchain.com

Image: cdn.prod.website-files.com

Source: langchain.com

Image: cdn.prod.website-files.com

Source: langchain.com

Image: cdn.prod.website-files.com

Source: langchain.com

Frequently Asked Questions

What is LangChain's primary brand color?

The website extraction recorded #CCE9FF as the primary color for LangChain. This is an observed website value, not a verified official brand specification.

What accent color does LangChain use?

The website extraction recorded #7FC8FF as an accent color for LangChain. Check the source website or official brand guidelines before using it in new work.

What font does LangChain use?

The extraction detected Twklausanne for body text and Aeonik for headings on https://www.langchain.com/?ref=startups.gallery. Font usage and licensing should be checked with the source.

Does LangChain use a light or dark theme?

The captured website used a dark color scheme, with a recorded background of #030710. The current website may differ from this snapshot.

Where can I find LangChain's logo?

The logo asset recorded from https://www.langchain.com/?ref=startups.gallery is included in the machine-readable JSON profile linked above. Check the original source for the current asset and usage permissions.

How was this brand profile generated?

This profile was extracted from https://www.langchain.com/?ref=startups.gallery using the Firecrawl branding extraction API, which inspects the live page's CSS, fonts, color tokens, and component styles. It is not affiliated with or endorsed by LangChain.

Methodology

Brand data on this page was extracted from https://www.langchain.com/?ref=startups.gallery using the Firecrawl branding extraction API, which extracts website design information. An extraction date was not recorded for this profile. The source site may have changed since the snapshot was captured, and a redirect may lead to a different company or product. Brand-in-the-wild images were found using image search. Cached previews link to original third-party sources. This page is published by CharacterQuilt and is not affiliated with or endorsed by LangChain.

Machine-Readable Profile

Direct endpoints for agents, designers, and tooling. No login or auth required.

GET /branding/langchain.json GET /branding/langchain/llms.txt

{
  "colorScheme": "dark",
  "fonts": [
    {
      "family": "Aeonik",
      "role": "heading"
    },
    {
      "family": "Twklausanne",
      "role": "body"
    }
  ],
  "colors": {
    "primary": "#CCE9FF",
    "secondary": "#E5F4FF",
    "accent": "#7FC8FF",
    "background": "#030710",
    "textPrimary": "#030710",
    "link": "#7FC8FF"
  },
  "typography": {
    "fontFamilies": {
      "primary": "Twklausanne",
      "heading": "Aeonik"
    },
    "fontStacks": {
      "heading": [
        "Twklausanne",
        "Tahoma",
        "sans-serif"
      ],
      "body": [
        "Aeonik",
        "Tahoma",
        "sans-serif"
      ],
      "paragraph": [
        "Aeonik",
        "Tahoma",
        "sans-serif"
      ]
    },
    "fontSizes": {
      "h1": "68.4px",
      "h2": "54px",
      "body": "20.25px"
    }
  },
  "spacing": {
    "baseUnit": 4,
    "borderRadius": "18px"
  },
  "components": {
    "input": {
      "background": "#030710",
      "textColor": "#CCE9FF",
      "borderColor": "#262C36",
      "borderRadius": "6.75px",
      "borderRadiusCorners": {
        "topLeft": "6.75px",
        "topRight": "6.75px",
        "bottomRight": "6.75px",
        "bottomLeft": "6.75px"
      },
      "shadow": "none"
    },
    "buttonPrimary": {
      "background": "#E5F4FF",
      "textColor": "#030710",
      "borderRadius": "6.75px",
      "borderRadiusCorners": {
        "topLeft": "6.75px",
        "topRight": "6.75px",
        "bottomRight": "6.75px",
        "bottomLeft": "6.75px"
      },
      "shadow": "none"
    },
    "buttonSecondary": {
      "background": "#030710",
      "textColor": "#CCE9FF",
      "borderColor": "#2F4B68",
      "borderRadius": "6.75px",
      "borderRadiusCorners": {
        "topLeft": "6.75px",
        "topRight": "6.75px",
        "bottomRight": "6.75px",
        "bottomLeft": "6.75px"
      },
      "shadow": "none"
    }
  },
  "images": {
    "logo": 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    "favicon": "https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/69a17e4a429d54e956e2a763_favicon.png",
    "ogImage": "https://cdn.prod.website-files.com/65b8cd72835ceeacd4449a53/69a1e9409d6b1c287c69da0d_Website%20preview.png",
    "logoHref": "https://www.langchain.com/"
  },
  "__llm_logo_reasoning": {
    "selectedIndex": 5,
    "reasoning": "Selected #0 because it is located in the header, links to the homepage, and matches the brand name 'LangChain'.",
    "confidence": 0.9,
    "source": "llm"
  },
  "__llm_button_reasoning": {
    "primary": {
      "index": 0,
      "text": "Start building",
      "reasoning": "Button #0 'Start building' is likely the primary CTA due to its action-oriented text and vibrant blue background, which aligns with the brand's accent color."
    },
    "secondary": {
      "index": 2,
      "text": "Get a demo",
      "reasoning": "Button #2 'Get a demo' is chosen as secondary due to its contrasting dark background, making it distinct from the primary button's color group."
    },
    "confidence": 0.9
  },
  "personality": {
    "tone": "modern",
    "energy": "medium",
    "targetAudience": "tech professionals and AI developers"
  },
  "designSystem": {
    "framework": "custom",
    "componentLibrary": ""
  },
  "confidence": {
    "buttons": 0.9,
    "colors": 0.95,
    "overall": 0.925
  },
  "__llm_metadata": {
    "logoSelection": {
      "llmCalled": true,
      "llmSucceeded": true,
      "finalSource": "llm",
      "rawLogoSelection": {
        "selectedLogoIndex": 0,
        "selectedLogoReasoning": "Selected #0 because it is located in the header, links to the homepage, and matches the brand name 'LangChain'.",
        "confidence": 0.9
      }
    },
    "buttonClassification": {
      "llmCalled": true,
      "llmSucceeded": true
    }
  }
}

LangChain Brand Identity

Color Palette

Typography

Visual Assets

UI Components

Brand Personality

LangChain Brand in the Wild

Frequently Asked Questions

Methodology

Machine-Readable Profile

Related Brand Profiles