The Kraken had the puck the entire overtime after winning the initial face-off before Wright skated in from the left side and sent a shot under Joel Hofer’s glove.
Chandler Stephenson tied it 3-3 at 19:58 of the third period when his long-distance wrist shot beat Hofer through traffic. The goal was upheld after a review for potential goalie interference.
Eeli Tolvanen had a goal and two assists, and Ryker Evans had a goal and an assist for the Kraken (7-3-4), who are 3-1-2 in their past six games. Philipp Grubauer made 16 saves in his second start of the season.
Dylan Holloway, Jordan Kyrou and Dalibor Dvorsky scored for the Blues (5-8-3), who are 2-1-1 in their past four. Joel Hofer made 26 saves.
Holloway made it 1-0 at 5:30 of the first period when he intercepted Ryan Winterton’s outlet pass through the middle of the ice and beat Grubauer with a wrist shot from the high slot.
Dvorsky pushed the lead to 2-0 at 9:40 on the power play. He sent a shot pass from the right circle to the front of the net that deflected in off the stick of Seattle defenseman Adam Larsson.
Ryker Evans, who made his season debut after missing the first 13 games with an upper-body injury, scored with a slap shot from the left face-off circle to make it 2-1 at 8:28 of the second period.
Tolvanen tied it 2-2 on the power play at 15:25 when he followed up the rebound of Vince Dunn’s point shot with a snap shot from the right circle.
Kyrou, who was a healthy scratch on Thursday in a 3-0 win at the Buffalo Sabres, gave the Blues a 3-2 lead at 5:10 of the third. He stayed with a loose puck at the left of the net, skated out in front and lifted it over Grubauer.