The flag of the exclave of Kaliningrad Oblast is a rectangle with a ratio of 2:3 divided into three horizontal stripes. The upper stripe is red having in the canton a silver and black stylized medieval castle with open gates and the monogram of empress Elizabeth Petrovna (under which reign parts of the region were shortly under Russian control during the Seven Year's War), a thin (1/3 of the upper strip) yellow stripe in the middle, and a dark blue stripe of the same size as the red bar.