Polymerizable composition containing polymerizable compound, film, half mirror for displaying projection image, and polymerizable compound

A polymerizable composition, comprising:

• at least two types of polymerizable compounds represented by Formula (I):
• in the formula, A represents a phenylene group which may have a substituent or a trans-1,4-cyclohexylene group which may have a substituent,
• L represents a single bond or a linking group selected from the group consisting of —CH2O—, —OCH2—, —(CH2)2OC(═O)—, —C(═O)O(CH2)2—, —C(═O)O—, —OC(═O)—, —OC(═O)O—, —CH═CH—C(═O)O—, and —OC(═O)—CH═CH—,
• m represents an integer of 3 to 12,
• Sp1 and Sp2 each independently represent a single bond or a linking group selected from the group consisting of a linear alkylene group or a branched alkylene group having 1 to 20 carbon atoms, and a group in which one or two or more —CH2—'s in the linear alkylene group or the branched alkylene group having 1 to 20 carbon atoms are substituted with —O—, —S—, —NH—, —N(CH3)—, —C(═O)—, —OC(═O)—, or —C(═O)O—, and
• Q1 and Q2 each independently represent a hydrogen atom or a polymerizable group selected from the group consisting of groups represented by Formula Q-1 to Formula Q-5, and any one of Q1 and Q2 represents a polymerizable group,
• wherein in a case where a number obtained by dividing the number of trans-1,4-cyclohexylene groups which may have a substituent and are represented by A by m is set to mc, mc's for the two types of polymerizable compounds are different from each other, at least one of the two types of the polymerizable compounds satisfies 0.5<mc<0.65, and at least the other of the two types of the polymerizable compounds satisfies 0.5<mc, and
• the polymerizable composition comprises at least one compound of Formula (I) in which:
• (i) m represents an integer of 6 to 12, and
• (ii) in a case where a number obtained by dividing the number of trans-1,4-cyclohexylene groups which may have a substituent and are represented by A by m is set to mc, 0.5<mc<0.7 is satisfied.