The present invention provides a novel arylamine compound having a low refractive index. An arylamine compound having at least one aromatic group, wherein the aromatic group has a first benzene ring, a second benzene ring, and a third benzene ring, and at least three alkyl groups, wherein the first benzene ring to the third benzene ring are are directly bonded in this order, the first benzene ring is bonded to the nitrogen of the amine, the first benzene ring may further have a substituted or unsubstituted phenyl group, the second benzene ring or the third benzene ring may further have a phenyl group substituted with an alkyl group, wherein two or more benzene rings among the first to third benzene rings are each independently a different benzene ring at the 1st and 3rd positions, and a phenyl group substituted with the alkyl group of the benzene ring, any one of the at least three alkyl groups, or an arylamine compound bonded to the nitrogen of the amine.
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