Flag of the Silesian Voivodeship
The civil flag of the Silesian Voivodeship, Poland is triband rectangle, divided into three horizontal stripes, that are from top to bottom: blue, yellow, and blue. The blue stripes are twice the size of the yellow middle stripe. The state flag is a blue rectangle with yellow eagle placed in its centre. It was designed by Barbara Widłak, and adopted on 11 June 2001. Design. The civil flag of the Silesian Voivodeship, Poland is a triband rectangle, with an aspect ratio of height to width of 5:8. It is divided into three stripes, that are  from top to bottom: blue, yellow, and blue. The blue stripes are twice the size of the yellow middle stripe. Their aspect ratio of height to width is 2:5, while, the aspect ratio of the yellow stripe is 1:5. The state flag of the voivodeship is a blue rectangle, with an aspect ratio of height to width of 5:8. In its centre is placed a yellow eagle, adopted from the coat of arms of the voivodeship. The colours of the coat of arms and the flag refer to the coat of arms of Upper Silesia, historically used as a symbol  of the dynasty of Silesian Piasts, who ruled in the duchies in the Upper Silesia. The coat of arms depicts a yellow eagle on the blue background, similar to the one in the voivodeship symbols. Additionally, there are also vertical versions of both civil and state flags. The colour scheme of the flags is officially defined as: History. The flag was designed by Barbara Widłak, and adopted by the Silesian Regional Assembly on 11 June 2001. Since 2011, on 15 July, in the Silesian Voivodeship is celebrated the Day of the Silesian Flag.