The club plays on the grounds of Trinity Health Stadium, with a capacity of 5,500.[4] The 1935 stadium was renovated and reopened on July 13, 2019, despite the fact the stadium was not completely finished.[5] Lights were completed and first used for the stadium's first night game on September 14, 2019 (Hartford Athletic vs. Louisville City FC).[6]
During the construction of Trinity Health Stadium, Athletic played home games at Pratt & Whitney Stadium at Rentschler Field. They played their first home game in front of more than 11,000 supporters.[7]
Hartford Athletic's official colors are green and blue, chosen because of their strong association with the sports teams of Hartford.[9][10] The team's crest and colors were first unveiled in a video on December 6, 2018.[11]
The supporters for Hartford Athletic are split between five groups based on their geographical location within the state of Connecticut:
The 19th Regiment – The first supporters group founded in early 2019 shortly after the announcement of the club. Today, it represents supporters based in the Greater Hartford area and Northern Connecticut.
Mad Hat Massive – Independent supporters group representing members from Fairfield and Litchfield counties, with their home pub hosting the official supporters away days watch parties at TK's American Cafe in Danbury where the Jell-O Shot tradition began. Members of the Independent Supporters’ Council.
The Boonies – Members of the Mad Hat Massive in the greater Torrington area.
Elm City Casuals – Independent supporters based out of the Greater New Haven area. They’re independent. They like pizza and riding trains. Members of the Independent Supporters’ Council.
East Side Rising – Supporters group founded in 2020 to represent Eastern Connecticut, nicknamed "A Family of Fans."
Raza Brava – Latino-centric supporters group representing the greater Hartford area.
Each group is separately managed but they stand and chant together on the east end of Trinity Health Stadium for home matches.
Starting in the 2022 season, the 19th Regiment, Mad Hat Massive and the Elm City Casuals will unite as one group, called The Bonanza
Among the notable chants used is the "Brass Bonanza," a melody sung by the supporters groups after scoring a goal, which was also used for the former NHL team in the city, the Hartford Whalers, for the same circumstances. The groups also use Bob Marley's classic "Three Little Birds" for the beginning of matches and when the opposing team scores.
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