LangChain logo

The LangChain logo is the official visual mark of the LangChain framework: a minimalist chain link icon formed by two intertwined “L” shapes in a gradient of turquoise and emerald, paired with the “LangChain” wordmark in a geometric sans-serif font. The icon symbolizes modular connections—loaders, vectors, chains, agents—while the green palette evokes growth and fresh data. The brand guidelines specify white space equal to the height of the “L,” a light or dark neutral background, and a minimum size of 24px for screen or 6mm for print. The logo is available in SVG, PNG, and monochrome variants in the /assets folder of the GitHub repository and on the website’s media kit page. Permitted uses include product UIs, blog posts, and partner decks; Prohibited uses include color changes, rotations, or adding shadows that obscure the mark. For co-branding, the icon may be displayed next to the partner logo, separated by a gap of 2× the capital letter height. Adherence to these rules maintains recognition and prevents visual drift as the LangChain ecosystem grows.