An ink jet ink comprising a first coloring material and a second coloring material, wherein the first coloring material is a black coloring material exhibiting a difference Δλ max1 (= λ maxD1 - λ maxw1) of 20.0 nm or more between a maximum absorption wavelength (λ maxD1) in a 20.0% by mass aqueous solution of 1,2-hexanediol and a maximum absorption wavelength (λ maxw1) in water in a UV-Vis absorption spectrum; the second coloring material is a coloring material exhibiting a difference Δ λmax2 (= λ maxD2 - λ maxW2) of 12.0 nm or less between a maximum absorption wavelength (λ maxD2) in a 20.0% by mass aqueous solution of 1,2-hexanediol and a maximum absorption wavelength (λ maxW2) in water in a UV-Vis absorption spectrum; a sum of the Δλ max1 and the Δλ max2 is 35.0 nm or less; the second coloring material comprises at least one selected from the group consisting of a compound represented by the following general formula, C.I. Food Black 2, C.I. Direct Blue 199, a compound represented by the following general formula, a compound represented by the following general formula, C.I. Direct Red 227, C.I. Acid Red 289, a compound represented by the following general formula, a compound represented by the following general formula, C.I. Acid Red 249, C.I. Direct Yellow 132, C.I. Acid Yellow 23, C.I. Acid Yellow 17 and a compound represented by the following general formula (VIII); and a sum total of a content (% by mass) of the first coloring material and a content (% by mass) of the second coloring material in the ink is 6.0% by mass or less based on a total mass of the ink: wherein in the general formula, R 4 and R 5 each independently represent an alkoxy group substituted with a hydroxy group and having 1 to 4 carbon atoms; n represents 1 to 3; and M each independently represents a hydrogen atom, an alkali metal, an ammonium or an organic ammonium, wherein in the general formula, R 8 each independently represent an alkyl group having 1 to 4 carbon atoms, and the alkyl group may be substituted with an anionic group, a sulfonamide group, a hydroxy group, an alkyl group having 1 to 4 carbon atoms or a combined group of at least two thereof; and n represents 3 or 4, wherein in the general formula, rings A, B, C and D indicated by broken lines each independently represent an aromatic ring or a heteroaromatic ring; R 9 represents an anilino group substituted with 1 to 3 anionic groups; R 10 represents an amino group or an alkoxy group having 1 to 4 carbon atoms; R 11 represents an alkylene group having 1 to 4 carbon atoms; M each independently represents a hydrogen atom, an alkali metal, an ammonium or an organic ammonium; and I represents 0 to 4, m represents 1 to 3, n represents 1 to 3, and I + m + n represents 1 to 4, wherein in the general formula, R 12, R 13, R 14 and R 15 each independently represent an alkyl group having 1 to 4 carbon atoms; and M each independently represents a hydrogen atom, an alkali metal, an ammonium or an organic ammonium, wherein in the general formula, R 16 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R 17 represents an aryloxy group substituted with 1 to 3 anionic groups, or a hydroxy group; n represents 1 or 2; when n = 1, R 18 represents an aryl group substituted with 1 to 3 anionic groups, and when n = 2, R 18 represents an alkylene group having 1 to 4 carbon atoms; and M each independently represents a hydrogen atom, an alkali metal, an ammonium or an organic ammonium, and wherein in the general formula (VIII), R 19 represents an aliphatic amine residue having an anionic group and having 1 to 4 carbon atoms; R 20 each independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and the alkyl group and the alkoxy group may be substituted with an anionic group; n represents 0 or 1; M each independently represents a hydrogen atom, an alkali metal, an ammonium or an organic ammonium; and I and m each independently represent 1 or 2.