Composition, optically anisotropic film, circularly polarizing plate, and display device

A composition exhibiting lyotropic liquid crystallinity comprising:

• a non-colorable rod-like compound having an acid group or a salt thereof;
• a non-colorable plate-like compound having an acid group or a salt thereof;
• and
• a salt consisting of a cation and an anion,
• wherein a ratio W obtained by Expression (W) is 0.25 to 1.75,
• a maximum absorption wavelength in a wavelength range of 230 to 400 nm of the rod-like compound is smaller than a maximum absorption wavelength in a wavelength range of 230 to 400 nm of the plate-like compound,
• Ratio
• ⁢
• W
• =
• (
• C
• ⁢
• 1
• +
• C
• ⁢
• 2
• +
• C
• ⁢
• 3
• )
• -
• (
• A
• ⁢
• 1
• +
• A
• ⁢
• 2
• )
• A
• ⁢
• 2
• (
• W
• )
• in Expression (W), C1 represents a molar amount of a cation contained in a salt of an acid group contained in the rod-like compound, C2 represents a molar amount of a cation contained in a salt of an acid group contained in the plate-like compound, C3 represents a molar amount of the cation contained in the salt, A1 represents a total molar amount of the acid group or the salt thereof contained in the rod-like compound, and A2 represents a total molar amount of the acid group or the salt thereof contained in the plate-like compound.