The present invention provides an organic solvent-based high-solid ink composition for gravure printing which shows good print density, printability, and laminatability even in gravure printing using a shallow cylinder. Provided is an organic solvent-based high-solid ink composition for gravure printing, mainly including: a pigment; a binder resin; and an organic solvent, the high-solid ink composition having a viscosity of 10 to 1000 mPa·s/25° C. and having a viscosity in gravure printing of 12 to 23 s/25° C. in terms of the efflux time from a Zahn cup #3, the pigment including at least one of an organic pigment and an inorganic pigment, the binder resin including a polyurethane resin having at least one of a primary amino group and a secondary amino group at an end, the polyurethane resin in an amount of 30 parts by mass, when dissolved in 70 parts by mass of the organic solvent, providing a solution having a viscosity of 100 to 900 mPa·s/25° C., the pigment and the binder resin satisfying specific conditions.
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