What fonts does LangChain use?
Measured from the captured homepage: Twklausanne for headings and Aeonik for body copy.
Open full LangChain reference →Observed typography
- Heading font
- Twklausanne
- Body font
- Aeonik
- System
- Two-family hierarchy
How the page is built
LangChain's captured homepage has 53 sections and 10 inner pages.
- 28 content
- 5 features
- 4 cta
- 4 statement
- 3 blog
- 2 faq
- 2 logos
- 1 footer
- 1 hero
- 1 pricing
- 1 showcase
- 1 stats
Other sites that use this pair
No other captured site in this library uses this same pair of fonts.
Captured colors
The captured homepage uses these 6 colors, in capture order.
- #030710
- #f2faff
- #e5f4ff
- #05070b
- #7fc8ff
- #e8edf5
Styles recorded: Dark.
LangChain's website font choices
Captured September 21, 2026. Read it with the full reference, where the palette, section order and responsive views sit next to the type.
A single family or a two-font system?
LangChain pairs Twklausanne for headings with Aeonik for body copy.
Compare it across the library
See the website font trends and the font pairing examples.
LangChain fonts — FAQ
What font does LangChain use?
LangChain uses Twklausanne for headings and Aeonik for body copy in the captured homepage.
Is Twklausanne free to use?
Check the foundry license for Twklausanne before shipping it. This page records what appeared on LangChain's site and grants no reuse rights.
What colors and sections were captured for LangChain?
6 colors (#030710, #f2faff, #e5f4ff, #05070b, #7fc8ff, #e8edf5) and 53 homepage sections, with 10 inner pages.
Which other sites use Twklausanne and Aeonik?
No other captured site in this library uses this same pair of fonts.
Fonts come from the rendered capture and may change when the site does. Library methodology