Robertson was 3 of 4 and Swopshire 2 of 2 from 3-point range in the first half. Colgate (3-6) shot 12 of 22 from distance to power a 51-23 lead at the break.
The Raiders maintained a comfortable lead throughout the second half. Utica got no closer than 18 points in the final three minutes.
Robert Tutein had three 3-pointers and 20 points for Utica. Ivan Iton added 15 points and Jonathan Wilson scored 10.