This pairing of a black floral long sleeve blouse and red dress pants is an interesting balance between formal and edgy. If you're not sure how to finish, a pair of black leather heeled sandals is a nice idea.
Red Dress Pants with Black Leather Heeled Sandals Outfits
This pairing of a red blazer and red dress pants crosses the divide between elegant and relaxed. Complement this ensemble with black leather heeled sandals and you're all set looking wonderful.