Malcolm Lemmons, who made all three of his 3-point attempts, chipped in 11 points for Niagara.
Niagara took its first lead, 12-11, at the 9:23 mark of the first half but Mark Nwakamma hit a layup to put Hartford (5-5) back up by one. The Purple Eagles, however, outscored the Hawks 25-7 over the final 9 minutes of the half to take a 37-20 advantage into the break.
Niagara (4-6) extended its lead to 21, 51-30, behind a 3-pointer from Lemmons. Lemmons' third trey of the night gave the Purple Eagles a 59-36 lead with 11:26 left to play.
The Purple Eagles shot 50 percent (27 of 54) from the field -- including 7 of 14 from deep.
Nwakamma was Hartford's lone player in double-figures with 14 points.
ESPN's Dan Dakich joins The Paul Finebaum Show to discuss the SEC's presence in the NBA Draft.
Ted Kapita was the top-rated recruit from West Virginia in the class of 2015 and recently played at DME Academy in Florida.
With the Suns drafting Tyler Ulis, they now have five guards on their roster who attended Kentucky.