font
It goes well with DIN Next. If you're thinking about using Harmonia Sans then try 110px for headers. Give 30px a shot for content.
People commonly tag it as agency, portfolio, design, big, bold, tech, london, vc, web and technology. You can get it from Fonts.com, Fontshop and MyFonts.
Harmonia Sans on its own
8 Harmonia Sans samples