Roboto Slab Font is a slab serif font based on Roboto. It was introduced in March 2013, as the default font in Google‘s note-taking service Google Keep (the font was changed to the sans-serif Roboto in 2018). It is available in four weights: thin, light, regular, and bold. However, no oblique versions were released for it.
Roboto has a dual nature. It has a mechanical skeleton and the forms are largely geometric. At the same time, the font features friendly and open curves. While some grotesks distort their letterforms to force a rigid rhythm, Roboto doesn’t compromise, allowing letters to be settled into their natural width. This makes for a more natural reading rhythm more commonly found in humanist and serif types.