Futura

Futura is a sans-serif font. It goes well with Proxima Nova, Playfair Display, Book Antiqua, Lato, Open Sans, Lyon Text, Tinos, Lucida Grande, Gotham and Thorowgood. If you're thinking about using Futura then try 18px for headers. Give 17px a shot for content.

People commonly tag it as design, sans serif, serif, modern, elegant, retro, caps, classy, tech and portfolio. You can get it from Fontdeck, Fonts.com, Fontshop, MyFonts and YouWorkForThem.