IBM Plex Sans Thai

IBM Plex Sans Thai is a sans-serif family with a broad range of seven weights, from 100 Thin through 700 Bold. Its normal style supports clear hierarchy without relying on italics, making it suited to interfaces, informational layouts, and other text-focused work where consistent structure matters.

Best suited for: Use the lighter and regular weights for interface labels, navigation, captions, and longer reading at comfortable sizes. Medium and semibold can separate headings, controls, or key information, while Bold may help short titles and prominent announcements stand apart.

Design considerations: The weight range gives you room to build contrast within one family. Thin and ExtraLight are best reserved for larger text or quiet display roles, while Light and Regular can support everyday reading. Semibold and Bold create stronger emphasis; check smaller sizes carefully so dense text remains easy to read.

Pairing guidance: A restrained serif can add contrast to headings or editorial sections without competing with the sans-serif structure. For a simpler system, pair it with another sans-serif that has fewer stylistic details and a compatible x-height. Keep the companion font limited to supporting roles, and let weight shifts provide most of the hierarchy.