A new and distinct cultivar of hibiscus plant named ‘DUP-KLK’, characterized by glossy, dark green leaves, upright growth, and a very large flower characterized by a large dark burnt orange eye which extends approximately one third of the petal length, the eye sharply margined against an amber zone having an outer margin of bright orange extending to approximately half of the petal length, the outer margin bleeding into a zone of bright straw yellow which extends to the petal edge.
