Red Rising by Pierce Brown
Red Rising is a science fiction story that takes place 700 years in the future when humans are inhabiting the other planets. On Mars the classes are defined by colors, the Reds are the lower caste that live deep below the surface and have the dangerous job of mining for helium. The Golds are the upper class people who are in control of all. As you might guess, factions are at work to infiltrate the Golds. Will the newest Red recruit, Darrow, be the one that is successful and raise his people up? If you liked the Hunger Games you will enjoy this trilogy by Pierce Brown that he concluded this year with "Morning Star".