A toner is provided which is excellent in development stability in both a low-temperature, low-humidity environment and a high-temperature, high-humidity environment over a long time period. The toner includes toner particles containing at least a binder resin and a colorant, and a fatty acid metal salt. The fatty acid metal salt has a volume-based median diameter (D50s) of 0.15 Êm or more and 0.65 Êm or less, and the liberation ratio of the fatty acid metal salt in the toner is 1.0% or more and 25.0% or less.