The present invention relates to a novel anthrapyridone compound in free acid form represented by the following formula (1), an ink composition containing the compound, and a colored body using the composition (in the above formula (1), R1 represents a hydrogen atom, Alkyl, etc., R2 represents a hydrogen atom, alkyl, phenyl, phenoxy, etc., R3 represents a hydrogen atom or methoxy group, X represents an anilino group that may have a substituent such as a sulfonic acid group, naphthalene that may be substituted by a sulfonic acid group Amino group, mono- or dialkylamino group which may have substituents such as sulfonic acid group, aralkylamino group, cycloalkylamine group, phenoxy group which may have substituents such as sulfonic acid group, hydroxyl group, amino group, etc. , Y represents a chlorine atom, a hydroxyl group, an amino group, etc.), the image recorded by the inkjet recording ink containing the compound of the present invention has high definition, and exhibits excellent light resistance and ozone resistance.