A yellow ink composition, containing as a colorant at least one type of
compound expressed by the following Formula I, and at least one type of
compound expressed by the following Formula II:
(where X.sub.1, X.sub.2, Y.sub.1, and Y.sub.2 are each a hydrogen atom
or a cyano group, Z.sub.1 and Z.sub.2 are each a substituent having an
aromatic ring, R.sub.1 and R.sub.2 are each an alkyl group, and M is a
metal atom)
(where R is a methoxy group or methyl group, and A is
1,5-disulfonaphtho-3-yl or 1,5,7-trisulfonaphtho-2-yl).