DCP's get converted to flat XYZ gamma 2.6, so if you want to see it, you'll need a player that sees that color profile. mpc-hc can play it back and openDCP player(set the output to the color of your monitor)
Premiere's monitor shows rec 709 gamma 2.4 timeline, even with color management on. The player you are using determines how its played back. It should look fine if you re-import back into Premiere.