Radiation-sensitive colored composition, colored cured film, color filter and method of producing the same, solid-state imaging device, liquid crystal display apparatus, and method of producing dye

A method of producing (A) a dye containing of from 10 ppm to 1000 ppm of a halogen ion, the method comprising:

• a dissolution process of dissolving the dye in a good solvent;
• and
• a reprecipitation process of adding a solution of the dye dropwise to a poor solvent to reprecipitate the dye.

A method of producing (A) a dye containing of from 10 ppm to 1000 ppm of a halogen ion, the method comprising:

• a dissolution process of dissolving the dye in a heated solvent;
• and
• a reprecipitation process of cooling a solution of the dye to reprecipitate the dye.