Ink composition and inkjet recording method

An ink composition comprising a sensitizer represented by the following Formula (I), a photopolymerization initiator, and a polymerizable compound having an ethylenic unsaturated bond:

• wherein in Formula (I), R1, R6 and R8 each independently represent a hydrogen atom, a hydroxyl group, a halogen atom, a linear or branched alkyl group which may be substituted, or an alkoxy group which may be substituted, R2, R4, R5 and R7 each independently represent a hydrogen atom, a linear or branched alkyl group which may be substituted, a halogen atom, or a cyano group, R3 represents a linear or branched alkyl group which is substituted with —NR9R10, a hydroxy group, an acryloyloxy group, or a metacryloyloxy group, or a cycloalkyl group which is substituted with —NR9R10, a hydroxy group, an acryloyloxy group, or a metacryloyloxy group, R9 and R10 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R9 and R10 may bond to each other to form a ring, and when R3 represents a linear or branched alkyl group, the alkyl group may consist of two or more alkyl chains that are connected to each other via one or more oxygen atom.