The Delaware State Flag was adopted on July 24, 1913. In fact, Delaware was the first state to confirm the Constitution of the United States and that is proudly represented on the state flag. The colonial blue field and the buff colored diamond represent the colors of a uniform worn by General George Washington. The diamond is a reference to a nickname “the Diamond State” because of Delaware’s small size and great value due to its geographical position on the Atlantic Ocean.December 7, 1787 is the day that Delaware became the first state to confirm the Constitution as the first state of a new nation, That date is proudly printed on the flag. The coat of arms represents occupational symbols for shipping, farming, hunting and cattle ranching.