http://www.myfonts.com/fonts/type-together/portada/

Portada was created from and for the digital world — from e-ink or harsh grids to Retina capability — making it one of the few serifs of its kind. Portada’s text and titling styles were engineered for superlative performance, making great use of sturdy serifs, wide proportions, ample x-height, clear interior negative space, and its subservient personality. After all, words always take priority in text.Digital magazines, newspapers, your favourite novel, and all forms of continuous screen reading benefit from Portada’s features. This family can also cover many of the needs developers have: user interface, showing data intensive apps on screen, even one-word directives and dialogs. And, as a free download, an exhaustive set of dark and light icons is included to maintain Portada’s consistent presence, whether as a word or an image. The complete Portada family (eight text styles, ten titling styles, and one icon set) is designed for extensive, clear screen use — a rare serif on equal footing with a sans.