To provide a curable composition for adjusting a color tone which allows easy adjustment of a color tone by mixing a plurality of pastes with each other and is optimal for making an aesthetic crown restoration in preparation of a crown prosthesis; to provide a crown restorative material; and to provide a method for adjusting a color tone using them.

There is provided the curable composition for adjusting the color tone of an opaque paste, which is a colored curable composition containing: (a) a filler which has an average particle diameter of 0.05-1.0 μm and in which a contents of fine particles with a particle diameter of 0.03 μm or less is 10 mass% or less; (b) a polymerizable monomer; (c) a photoinitiator; and (d) a pigment, and has a viscosity of 10 to 30 Pa s at 23°C, and is mixed with the opaque paste and is used for adjusting the opaque paste for shielding a background color in the crown prosthesis to have a desired color tone.

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