If your project uses both Thai and Latin scripts, never mix Krungthep (display) with another display Thai font. Instead, use a neutral Thai sans for body text.
On its own, Source Serif Pro was unremarkable—earnest, readable, with a quiet, scholarly air. Its Latin letterforms had no swagger. Its ‘g’ was a simple double-story affair, its ‘a’ a modest bowl. But when he placed it next to Krungthep, something clicked. krungthep font pairing
To balance Krungthep's heavy presence, pair it with simple, highly legible sans-serif or clean serif fonts. Krungthep + Inter If your project uses both Thai and Latin