LAS VEGAS — Jaylen Nowell and Nahziah Carter scored 14 points each, and Washington held off a late Colorado rally for a 66-61 victory in the Pac-12 tournament semifinals Saturday night. The top-seeded Huskies led by 14 before the Buffaloes cut the lead to 60-56 with 1:01 left. McKinley Wright hit a 3-pointer with 17 seconds left to cut Washington’s lead to three, but the Buffaloes let David Crisp get behind them for a breakaway layup to seal it. After struggling in the first half, Washington (26-7) kicked its long-armed, swarming defense into a faster gear and the fifth-seeded Buffaloes (21-12) had trouble handling it. Colorado shot 2 of 16 from 3-point range in the second half and had 18 turnovers overall, leading to 24 Huskies points. Washington had 13 steals and held the Buffaloes to 32 percent shooting to earn a spot in Saturday night’s title game against Oregon or Arizona State. Tyler Bey had 22 points and 11 rebounds, but Wright was held to seven points on 1-of-10 shooting. The Buffaloes were looking to recapture the magic of 2012, when they won four games in four days to win the Pac-12 title. Colorado climbed the first two rungs in Las Vegas, grinding out a low-scoring win over California, outlasting Oregon State after blowing most of a 21-point lead. Washington’s zone gave the Buffaloes all kinds of trouble in two regular-season meetings.