Tyler Toffoli gave the Devils a 1-0 lead at 13:36 of the first period, scoring a power-play goal on a slap shot from above the circles.
It was New Jersey's first goal with the man-advantage in 24 opportunities (nine games).
"I think we built off of last game (a 1-0 overtime loss at the Carolina Hurricanes on Saturday)," Toffoli said. "I think the Carolina game was really good for us. The way we worked and the way we kind of stayed together, and I think we built off that and started the game off on the right note and had a good overall game."
Hughes scored 48 seconds into the second period to make it 2-0. Erik Haula stole the puck from Matty Beniers in the Kraken's zone and passed to Hughes, who skated below the left circle and banked a shot in off Daccord's mask. It was his first goal in three games since returning from an upper-body injury that caused him to miss 11 games.
"I think Haula was looking to get back above the puck and he got himself in a good position, so we got it back. And Jack's play, again, we've seen that before," New Jersey coach Lindy Ruff said. "Short side ... if the goalie is kind of leaning, he's been able to capitalize."
Said Toffoli, "That's turning out to be his patented move, I guess."