Brandon Montour and Matty Beniers also scored for the Kraken.
Jordan Eberle and Matty Beniers each added a goal and an assist.
Seattle lost their most recent appearance to New England, its opponent in two weeks at Levi’s Stadium in Santa Clara, California.
Matty Beniers and Kaapo Kakko also scored goals for Seattle, while Philipp Grubauer had 24 saves.
Joey Daccord made 26 saves for Seattle.
Chandler Stephenson and Eeli Tolvanen scored, and Joey Daccord made 20 saves for the Kraken.
Darnold passed for 4,048 yards with 25 touchdowns and 14 interceptions in his first season with the Seahawks
Eeli Tolvanen, Jordan Eberle and Jared McCann also scored for the Kraken.
Washington hosts No. 2 Michigan on Wednesday, Jan. 14.
The victory moved the Kraken into third place in the Pacific Division.