A dye compound, represented by Formula 1: wherein in Formula 1, HAr is R 1 and R 1 ' are each independently a hydrogen atom, a halogen atom, a carboxyl group, an aldehyde group, a hydroxyl group, a cyano group, a nitro group, an alkyl group of C 1-20, an alkoxy group of C 1-20, (wherein R 11 and R 12 are each independently a hydrogen atom, an alkyl group of C 1-10, an alkoxy group of C 1-10, an alkylalcohol group of C 1-10, an alkylamino group of C 1-10, an allyl group of C 3-20, an acryloyl group, an acrylate group, a methacryloyl group, or a methacrylate group), *-(CH 2) n -R 13, wherein n is an integer of 1 to 20, and R 13 is a halogen atom, a hydroxyl group, an amine group, an acryloyl group, an acrylate group, a methacryloyl group, or a methacrylate group, or *-O-(CH 2) n -R 14, wherein n is an integer of 1 to 20, and R 14 is a halogen atom, a hydroxyl group, an amine group, an acryloyl group, an acrylate group, a methacryloyl group, or a methacrylate group, or each of R 1 and R 1 ' forms an aromatic ring together with any one of adjacent X 1, X 2, X 1 ', and X 2 '; R 2, R 3, R 2 ', and R 3 ' are each independently a hydrogen atom, a halogen atom, an aldehyde group, a hydroxyl group, a cyano group, a nitro group, an alkyl group of C 1-5, an alkoxy group of C 1-5, wherein R 21 and R 22 are each independently a hydrogen atom, an alkyl group of C 1-5, an alkoxy group of C 1-5, an alkylalcohol group of C 1-5, or alkylamino group of C 1-5, *-(CH 2) n -R 23, wherein n is an integer of 1 to 5, and R 23 is a halogen atom, a hydroxyl group, an amine group, an acryloyl group, an acrylate group, a methacryloyl group, or a methacrylate group, or *-O-(CH 2) n -R 24, wherein n is an integer of 1 to 5, and R 24 is a halogen atom, a hydroxyl group, amine group, an acryloyl group, an acrylate group, a methacryloyl group, or a methacrylate group, or each of R 2, R 3, R 2 ' and R 3 ' forms an aromatic ring together with any one of adjacent X 1, X 2, X 1 ', and X 2 '; and X 1, X 2, X 1 ', and X 2 ' are each independently a hydrogen atom, a halogen atom, an aldehyde group, a hydroxyl group, a cyano group, a nitro group, an alkyl group of C 1-5, or an alkoxy group of C 1-5, or each of X 1, X 2, X 1 ', and X 2 ' forms an aromatic ring together with any one of adjacent R 1, R 2, R 3, R 1 ', R 2 ', and R 3 '. HAr is R 1 and R 1 ' are each independently a hydrogen atom, a halogen atom, a carboxyl group, an aldehyde group, a hydroxyl group, a cyano group, a nitro group, an alkyl group of C 1-20, an alkoxy group of C 1-20, (wherein R 11 and R 12 are each independently a hydrogen atom, an alkyl group of C 1-10, an alkoxy group of C 1-10, an alkylalcohol group of C 1-10, an alkylamino group of C 1-10, an allyl group of C 3-20, an acryloyl group, an acrylate group, a methacryloyl group, or a methacrylate group), *-(CH 2) n -R 13, wherein n is an integer of 1 to 20, and R 13 is a halogen atom, a hydroxyl group, an amine group, an acryloyl group, an acrylate group, a methacryloyl group, or a methacrylate group, or *-O-(CH 2) n -R 14, wherein n is an integer of 1 to 20, and R 14 is a halogen atom, a hydroxyl group, an amine group, an acryloyl group, an acrylate group, a methacryloyl group, or a methacrylate group, or each of R 1 and R 1 ' forms an aromatic ring together with any one of adjacent X 1, X 2, X 1 ', and X 2 '; R 2, R 3, R 2 ', and R 3 ' are each independently a hydrogen atom, a halogen atom, an aldehyde group, a hydroxyl group, a cyano group, a nitro group, an alkyl group of C 1-5, an alkoxy group of C 1-5, wherein R 21 and R 22 are each independently a hydrogen atom, an alkyl group of C 1-5, an alkoxy group of C 1-5, an alkylalcohol group of C 1-5, or alkylamino group of C 1-5, *-(CH 2) n -R 23, wherein n is an integer of 1 to 5, and R 23 is a halogen atom, a hydroxyl group, an amine group, an acryloyl group, an acrylate group, a methacryloyl group, or a methacrylate group, or *-O-(CH 2) n -R 24, wherein n is an integer of 1 to 5, and R 24 is a halogen atom, a hydroxyl group, amine group, an acryloyl group, an acrylate group, a methacryloyl group, or a methacrylate group, or each of R 2, R 3, R 2 ' and R 3 ' forms an aromatic ring together with any one of adjacent X 1, X 2, X 1 ', and X 2 '; and X 1, X 2, X 1 ', and X 2 ' are each independently a hydrogen atom, a halogen atom, an aldehyde group, a hydroxyl group, a cyano group, a nitro group, an alkyl group of C 1-5, or an alkoxy group of C 1-5, or each of X 1, X 2, X 1 ', and X 2 ' forms an aromatic ring together with any one of adjacent R 1, R 2, R 3, R 1 ', R 2 ', and R 3 '.