font
It goes well with Freight Text, FF Tisa, Lettera, Calibre, Inter, Gotham Rounded, Copernicus, Geogrotesque, Value and Lora. If you're thinking about using Circular then try Give 60px a shot for content.
People commonly tag it as portfolio, design, food, agency, bold, writing, big, travel, social and music.
Circular on its own
35 Circular samples