Dark Obsession by Calvin Klein Cologne. Feel the passion of Dark Obsession, a powerful fragrance for men. Created by the design house of Calvin Klein in 2013, this provocative scent melds fertile notes of clary sage and balsam fir with green mandarin and guarana for a scent that engages the senses. It is equally as effective paired with your designer business suits as it is with your kicking-around weekend wear, so you can wear it for work as well as for play.