Stratum is a sans-serif font. It goes well with FF Meta Serif Web Pro, Proxima Nova, Helvetica Neue, FF Dagny, School, seravek and Droid Sans. If you're thinking about using Stratum then try 32px for headers. Give 52px a shot for content.
People commonly tag it as sans serif, modern, writing, agency, app, design, product, tech, sports and analytics.