Half of a circle of white stars over a blue background. One of the stars is coloured with the flag of Bosnia and Herzegovina. Next to it, the text reads "Bosnia and Herzegovina. EU candidate country". The flag of Europe is visible on the bottom right corner.
https://social.network.europa.eu/system/media_attachments/files/109/522/821/639/710/261/original/a5a2938a853b80c2.jpg