Ink set, recording method, and colored object

An ink set for ink-jet recording which is an at least two-color ink set comprising at least a cyan ink composition and a magenta ink composition, wherein a cyan dye contained in the cyan ink composition is a dye represented by the following formula (7) or a salt thereof, and a magenta dye contained in the magenta ink composition is a dye represented by the following formula (6) or a salt thereof,

• wherein,
• rings A to D each independently represent a benzene ring or a six-membered nitrogen-containing heteroaromatic ring;
• and at least one represents a nitrogen-containing heteroaromatic ring, and at least one of the rest represents a benzene ring;
• E represents an alkylene group;
• X represents an anilino group or a naphthylamino group having at least one sulfo group, carboxy group, or phosphoric acid group as a substituent, and the anilino group or naphthylamino group may be further substituted with one, or at least two substituents selected from the group consisting of a sulfo group, a carboxy group, a phosphoric acid group, a sulfamoyl group, a carbamoyl group, a hydroxy group, an alkoxy group, an amino group, a mono- or dialkylamino group, a mono- or diarylamino group, an acetylamino group, an ureide group, an alkyl group, a nitro group, a cyano group, a halogen atom, an alkylsulfonyl group and an alkylthio group;
• Y represents an amino group;
• a hydroxy group;
• or a mono- or dialkylamino group or nitrogen-containing heterocycle group which may have one, or at least two substituents selected from the group consisting of a sulfo group, a carboxy group, a phosphoric acid group, a sulfamoyl group, a carbamoyl group, a hydroxy group, an alkoxy group, a hydroxyalkoxy group, an amino group, a mono- or dialkylamino group, a mono- or diarylamino group, an acetylamino group, an ureide group, an alkyl group, a nitro group, a cyano group, a halogen atom, an alkylsulfonyl group and an alkylthio group;
• with the proviso that combinations in which Y represents an amino group or a hydroxy group, and X represents a substituted anilino group are excluded;
• b is a number from 0 to 2.9;
• c is a number from 0.1 to 3;
• and the sum of b and c is 1 to 3.
• wherein,
• n represents an integer of 1 to 3;
• R1 represents a hydrogen atom, an alkyl group, a hydroxy lower alkyl group, a cyclohexyl group, a mono- or dialkylaminoalkyl group, or a cyano lower alkyl group;
• R2 represents a hydrogen atom or a methoxy group;
• R3 represents an anilino group substituted with a group selected from the group consisting of a sulfo group, a carboxy group, an alkoxy group, a carbamoyl group, a cyano group, an alkyl group, an anilino group, a phenoxy group, an amino group, a hydroxy group and a mercapto group, or an unsubstituted anilino group;
• a mono- or dialkylamino group substituted with a group selected from the group consisting of a sulfo group, a carboxy group, an alkoxy group, a carbonyl group, a carbamoyl group, a cyano group, an anilino group, a phenoxy group, an amino group, a hydroxy group, a mercapto group and a phenyl group, or an unsubstituted mono- or dialkylamino group;
• a phenylthio group substituted with a group selected from the group consisting of a sulfo group, a carboxy group, an alkoxy group, a carbonyl group, a carbamoyl group, a cyano group, an alkyl group, an anilino group, a phenoxy group, an amino group, a hydroxy group and a mercapto group, or an unsubstituted phenylthio group;
• an alkylthio group substituted with a group selected from the group consisting of a sulfo group, a carboxy group, an alkoxy group, a carbonyl group, a carbamoyl group, a cyano group, an anilino group, a phenoxy group, an amino group, a hydroxy group, a mercapto group and a phenyl group, or an unsubstituted alkylthio group;
• a sulfoanilino group substituted with a methyl group, a methoxy group or a carboxy group;
• a carboxy-substituted hydroxyanilino group;
• a sulfo group-substituted naphthylamino group, or an unsubstituted naphthylamino group;
• a phenoxy group substituted with a group selected from the group consisting of a sulfo group, a carboxy group, an acetylamino group, an amino group, a hydroxy group, a phenoxy group and a phenyl group, or an unsubstituted phenoxy group;
• a monoalkylaminoalkylamino group;
• a dialkylaminoalkylamino group;
• a hydroxy group;
• a mercapto group;
• or an amino group;
• provided that all the aforementioned groups and substituents represented by R1 to R3 have a hydrogen atom, the hydrogen atom may be substituted with a group other than a hydrogen atom.