Curable composition and method for producing cured film

A curable composition comprising a polymerizable compound, the curable composition being configured to be cured by irradiation with an active ray, wherein:

• a content of a monofunctional polymerizable compound that has a melting point of 25° C. or less is 5% by mass or more and 50% by mass or less based on a total mass of the polymerizable compound;
• a content of a polyfunctional polymerizable compound is 50% by mass or more and 95% by mass or less based on the total mass of the polymerizable compound;
• and
• when a nanoindentation evaluator is used to press an indenter into a cured film by 100 nm in a thickness direction of the cured film, P1 is defined as a load amount required for pressing, and P2 is defined as a load amount after the pressing is maintained for 2 seconds, the cured film satisfies both of conditions (1) and (2) below, the cured film being obtained by applying the curable composition to a base material to form a coating film having an average thickness of 8 μm, and curing the coating film by irradiation with an active ray at a cumulative light amount of 400 mJ/m2:
• (1) the P2 is 20 μN or less, and
• (2) a relaxation rate obtained by an expression ((P1−P2)/P1×100) is 15% or more.