Art. 166. The flag of the Republic of Bulgaria shall be a tricolour: white, green, and red from top, placed horizontally.2
A popular version of the flag, which has no official status, is also commonly seen. It has the full coat of arms on the left of the flag, placed across the white and green fields only.3
According to the Law for the State Seal and National Flag of the Republic of Bulgaria, promulgated on April 24, 1998:
Art. 15. (1) The national flag of the Republic of Bulgaria is a national symbol which expresses the independence and sovereignty of the Bulgarian state.
(2) The national flag of the Republic of Bulgaria is tricolour: white, green and red fields, placed horizontally from the top downwards. On fixing the national flag in a vertical situation of the carrying body the colours shall be arranged from left to right - white green, red, regarded opposite the flag.
(3) The national flag is of a rectangular shape. The fields of the individual colours shall be equal in size and shall be situated along the horizontal of the rectangular.4
According to the Standardisation and Metrology Committee, the following are the required colours for use in the national flag: