Coated cutting tool

A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, wherein:

• the coating layer comprises a lower layer, an intermediate layer, and an upper layer in this order from the substrate side to the surface side of the coating layer;
• the lower layer comprises one or two or more Ti compound layers containing a Ti compound of Ti and an element of at least one kind selected from the group consisting of C, N, O and B;
• the intermediate layer comprises an α-Al2O3 layer containing α-Al2O3,
• the upper layer comprises one or two or more Ti compound layers containing a Ti compound of Ti and an element of at least one kind selected from the group consisting of C, N and O, and at least one of the Ti compound layers in the upper layer is a TiCN layer;
• an average thickness of the upper layer is 1.00 μm or more and 6.50 μm or less;
• and
• the upper layer satisfies conditions represented by following formula (i) and formula (ii):
• 25≤RSA1<70 (i)
• in the formula (i), where, in a cross section of the upper layer in a direction perpendicular to the surface of the substrate, a sum of areas of an entire cross section is taken as 100 area %, RSA1 is a ratio, in terms of area %, of a cross-sectional area of a region where a misorientation A is 0 degrees or more and less than 10 degrees, the misorientation A being an angle, in terms of degrees, formed by a normal to a (220) plane of each grain having a cubic crystalline structure and a normal to the surface of the substrate;
• and
• 25≤RSA2<70 (ii)
• in the formula (ii), where, in a cross section of the upper layer in a direction perpendicular to the surface of the substrate, a sum of areas of an entire cross section is taken as 100 area %, RSA2 is a ratio, in terms of area %, of a cross-sectional area of a region where a misorientation A is 20 degrees or more and less than 30 degrees, the misorientation A being an angle, in terms of degrees, formed by a normal to a (220) plane of each grain having a cubic crystalline structure and a normal to the surface of the substrate.