The flag of the European Union (EU) features a circle of twelve golden (yellow) stars on a blue background. The number of stars is not related to the number of member states, rather it represents unity, solidarity and harmony among the peoples of Europe. The blue color symbolizes the ideals of peace, truth, and stability, while the circle represents unity and completeness. The EU flag was adopted on December 8, 1955, and it is used to represent the European Union and its institutions.