The following Delaware state symbols have been approved by the Delaware General Assembly and added to the Delaware Code:
The official colors are colonial blue and buff
The seal of Delaware was first adopted on January 17, 1777, with the current version being adopted April 29, 2004. It contains the state coat of arms surrounded by the inscription "Great Seal of the State of Delaware" and the dates 1704, 1776 and 1787.
The flag of Delaware was first adopted on July 24, 1913. It consists of a buff-colored diamond on a field of colonial blue, with the coat of arms of the state of Delaware inside the diamond. Below the diamond, the date December 7, 1787, declares the day on which Delaware became the first state to ratify the United States Constitution. The colors of the flag reflect the colors of the uniform of General George Washington.
This nickname comes from the legend that Thomas Jefferson described Delaware as a jewel among states due to its strategic location on the Eastern Seaboard.
This nickname comes from the fighting Blue Hen cocks that were carried with soldiers for entertainment during the Revolutionary War.
This nickname comes from substantial contributions Delaware has made as compared to its relatively small size.
Some residents of states that were also formerly part of the 13 original colonies have given this name to Delaware as a parody or insult to its classic nickname "The First State."
Sillimanite was recognized by geologists in Delaware prior to 1830, is widespread throughout the schists of the Delaware Piedmont, and occurs as large masses and steam-rounded boulders at the Brandywine Springs State Park.
Belemnite was officially adopted on July 2, 1996, at the suggestion of Kathy Tidball's third grade Quest students at Martin Luther King, Jr. Elementary School in Wilmington, Delaware. The fossil, an extinct squid with a conical shell, is commonly found along the Chesapeake and Delaware Canal.
The eastern tiger swallowtail (Pterourus glaucus) was officially adopted on June 10, 1999, as indigenous to Delaware and commonly found in deciduous woods, along streams, rivers, and wooded swamps, and in towns and cities throughout Delaware. They were chosen based on a statewide vote of public and parochial students, out of suggestions from students of the Richardson Park Learning Center.
The Delaware Diamond (coordinates of right ascension 9h40m44s and declination 48°14'2") was officially adopted on June 30, 2000, as a star of the 12th magnitude and the first star on the International Star Registry ever to be registered to an American state. It was chosen in a 1999 Delaware Museum of Natural History contest by Amy Nerlinger of Wilmington.
The horseshoe crab (Limulus polyphemus) was officially adopted on June 25, 2002, in recognition of its importance and value in the medical field and as the principal food source for more than a million shore birds.
The stonefly (order Plecoptera) was officially adopted on May 4, 2005, in recognition of the importance of excellent water quality and the vital role played by healthy aquatic ecosystems. It was supported by Gunning-Bedford Middle School, Salesianum High School, Delcastle Technical High School, Dickinson High School Environmental Club, The Independence School, Springer Middle School, St. Andrews School, and The Charter School of Wilmington.
The Kalmar Nyckel was adopted in 2016 as the state tall ship, serving "as Delaware's seagoing ambassador both at home and at many ports of call, raising awareness of the First State for thousands who see her and come on board."
State quarter for Delaware