松了口气

A yellow face with soft, closed eyes, raised eyebrows, and a slight smile. Facebook’s design features a slightly open mouth, as if sighing.

Conveys various pleasant feelings, including contentment, calm, peace, and relief. May also convey feelings of happiness or good-natured humor more generally.

Google and Microsoft previously included sweat beads. Not to be confused with 😔 Pensive Face, which has similarly shaped eyes but in a sadder expression.