Provided is a compound of Chemical Formula 1:






wherein X1 is N or CRa, X2 is N or CRb, X3 is N or CRc, and one or more of X1 to X3 are N;
Ar1 and Ar2 each independently is a substituted or unsubstituted alkyl, aryl group, or heteroaryl group;
Ar3 is a substituted or unsubstituted aryl or heteroaryl group;
L is a substituted or unsubstituted arylene group;
R1 and R2 each independently is hydrogen, deuterium, or a substituted or unsubstituted alkyl or aryl group, or bond to each other to form a ring;
R3 and Ra to Rc each independently is a hydrogen, deuterium, halogen, nitrile, nitro, hydroxyl, or a substituted or unsubstituted group selected from among a silyl, boron, alkyl, cycloalkyl, alkoxy, aryloxy, alkylthioxy, arylthioxy, alkylsulfoxy, arylsulfoxy, alkenyl, aralkyl, aralkenyl, alkylaryl, arylphosphine, phosphine oxide, aryl, or a heteroaryl group, or bond to adjacent groups to form a ring;
a3 is 1 to 6; and
n is 1 to 5,
and an organic light emitting device comprising the same.