The national flag of the Principality of Andorra was adopted in 1866. A national flag is a Flag that symbolises a country The flag is flown by the government but usually can be flown by Citizens of that country as well Andorra, officially the Principality of Andorra ( Catalan: Principat d'Andorra) is a small Landlocked country in western The flag is a vertical tricolor of blue, yellow, and red with the coat of arms of Andorra in the center. A tricolour or tricolor (three colours is a Flag or Banner more-or-less equally divided (horizontally vertically or less frequently diagonally The Coat of arms of Andorra has existed for centuries It supposedly violates the Rule of tincture. Although the three vertical bars may at first appear to be of equal width, the center yellow bar is slightly wider than the other two so that the ratio of bar widths is 8:9:8. The overall flag ratio is 7:10.
The design is based on the flags of France and Spain, the two states that protect the independence of the small state. The design of vertical bars is taken from the French Tricolore, as is the blue and red. The National flag of France (known in French as drapeau tricolore, drapeau français,and in military parlance les couleurs Yellow and red are taken from the Spanish flag; from 1806 to 1866, Andorra's flag had been a vertical bicolor of yellow and red. The motto in the coat of arms in the middle stripe Virtus Unita Fortior means "Strength United is Stronger".
The flags of Chad and Romania are also vertical tricolors of blue, yellow, and red. The National flag of the Republic of Chad is a vertical tricolor consisting (left to right of a Blue, a Yellow and a Red field The national flag of Romania is a tricolour with vertical stripes beginning from the flagpole blue yellow and red