Ink composition, and colored ink jet recording method

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PROBLEM TO BE SOLVED : To provide an aqueous black ink composition that provides a black recorded image that is high in color development (print density), and an inkjet recording method and a colored body using the same.SOLUTION : An ink composition comprises, as a colorant, both a dye represented by the formula (1) or salt thereof, or a mixture of them, and a dye that is substantially insoluble in water (R, Rand R-Rare H, a sulfo group, a carboxy group or the like; Rand Rare H, a sulfo group or the like; n is an integer of 0 or 1).