Ink accommodating body and ink composition

An ink accommodating body accommodating an ink composition, wherein

• the ink composition contains water, a first dye that is a compound represented by Formula (B-1) or a salt thereof, and a second dye having a maximum absorption wavelength of 500 nm or more and 580 nm or less,
• a content of the first dye in the ink composition is 0.5% by mass or more with respect to a total amount of the ink composition,
• a content of the second dye in the ink composition is 0.2% by mass or more and 2.0% by mass or less the total amount of the ink composition,
• a value of a ratio (A/V) is 1.7 or less where a total surface area of a metal, of the ink accommodating body, in contact with the ink composition is A (cm2) and an accommodation capacity for the ink composition accommodated in the ink accommodating body is V (cm3),
• the ink accommodating body is in the form of a replenishing bottle,
• a portion of the ink accommodating body in contact with the ink composition does not contain a metal,
• the second dye is selected from a compound represented by Formula (M-1) or a salt thereof and a compound represented by Formula (M-2) or a salt thereof,
• the ink composition contains the compound represented by Formula (M-1) or a salt thereof and the compound represented by Formula (M-2) or salt thereof,
• a content of the compound represented by Formula (M-1) or a salt thereof in the ink composition is smaller than a content of the compound represented by Formula (M-2) or a salt thereof in the ink composition, and
• a total amount of the solid contents of the dyes is 6.0% by mas or less with respect to the total amount of the ink composition.