Washington scored the next two goals courtesy of Jakub Vrana on the power play at 4:25 and Connor McMichael at 7:48 of the opening period, taking a 2-1 lead into the first intermission.
McMichael scored his second of the night at 1:53 of the second period to double the Capitals' lead. After the goal, Trent Miner replaced Justus Annunen in Colorado's net.
The Burgundy and Blue cut Washington's lead in half at 4:03 of the middle frame when Nikolai Kovalenko scored his second goal of the season with a backhand shot from the doorstep off a rebound.