The flag of Boston consists of a sky blue field and the seal of the city of Boston, Massachusetts, in the center. The flag is sometimes flown in a darker shade of blue, more of a turquoise.
The flag was proposed by the Columbus Day Committee in 1913, but it was not adopted until 1917. The motto contained within the flag are the Latin words Sicut Patribus Sit Deus Nobis, meaning "As to our fathers may God be to us."
The flag placed 133rd out of 150 city flags in a 2004 survey by the North American Vexillological Association (NAVA), based on appearance.
The proportions of the flag are 7:10. The code specifies that the flag is to be flown at Boston City Hall and at Boston Common. It is also flown at private locations within and around the city.