Josh Scott tied his career best with 21 points and Askia Booker added 20, giving Colorado its first trio of 20 point scorers in the same game since Kal Bay (21), Dominique Coleman (20) and Richard Roby (20) did it against Oklahoma State on Feb. 3, 2007.
The win was the third straight for Colorado (18-6, 7-4 Pac-12) and avenged a 71-54 loss at Washington on Jan. 12 in which the Buffaloes lost star point guard Spencer Dinwiddie to a season-ending knee injury. Tre'Shaun Fletcher, a key reserve, suffered a knee injury in the same game.
Johnson also had 10 rebounds for Colorado, which has won 15 of its 16 home games this season. It's the second most home wins in a season by Colorado behind the Buffaloes' 2011-12 team, which finished with 18 wins at the Coors Events Center.
C.J. Wilcox, the Pac-12's second leading scorer who had 31 points, on 7-of-12 shooting from 3-point range, in the Huskies' victory last month, was off target in the rematch. He finished with eight points on 2-of-10 shooting from the floor, including 0 for 7 from 3-point range.
The Huskies were without Desmond Simmons for most of the first half after he took an inadvertent elbow to his head battling for a rebound. The blow opened a cut on his forehead and trainers helped him off the floor and into the locker room for treatment. He returned in the second half with a bandage covering the cut.
It was the third consecutive loss for Washington (13-11, 5-6), which was led by freshman Nigel Williams-Goss with 15 points.
Up by 17 at halftime, Colorado went in front 68-50 on a breakaway dunk by Jaron Hopkins and put the game away with a 10-0 run that stretched its lead to 83-57 with 4:03 remaining. Johnson fueled the surge with a 3-pointer and fastbreak layup.
Setting the tone from the outset, the Buffaloes scored the game's first 10 points and had an 11-3 flurry over the last four minutes of the first half to take a 48-33 lead. Xavier Talton closed the surge with a jumper just before the buzzer sounded, giving the Buffaloes their biggest output of the season in the first half and the most ever in a Pac-12 game.