Flag of Washington
| Use | Civil and state flag |
|---|---|
| Proportion | 5:8 |
| Adopted | March 5, 1923 (standardized in 1967) |
| Design | A state seal sized at 1/3 the length of the flag centered on a field of dark green. |
The flag of Washington consists of the state's seal, a portrait of George Washington, on a dark green field with optional gold fringe. It is the only U.S. state flag with a green field, as well as the only state flag with the likeness of a U.S. president. The secretary of state regulates flag protocol related to the state flag, as well as approving replica flags for commercial sale and other standards related to the flag.
Though Washington had achieved statehood in 1889, it did not have an official flag at the time. In 1915, the Washington chapter of the Daughters of the American Revolution designed a green flag with a centered state seal and campaigned for its adoption by the Washington State Legislature in the early 1920s. The flag was officially adopted on March 5, 1923, and has since undergone minor revisions, including the use of standardized colors in 1955 and a modernized seal in 1967.