A silicone rubber composition comprising: 100 parts by mass of an organopolysiloxane having a polymerization degree of at least 100 and containing at least two alkenyl groups bonded to silicon atoms within each molecule, 10 to 100 parts by mass of a reinforcing silica having a specific surface area measured by a BET method of at least 50 m 2 /g, 0.01 to 10 parts by mass of a zirconia-ceria solid solution, and an effective amount of a curing agent composed of an organic peroxide in an amount within a range from 0.1 to 10 parts by mass relative to 100 parts by mass of the component, or a combination of an organohydrogenpolysiloxane and a platinum group metal-based catalyst, wherein the organohydrogenpolysiloxane contains at least two hydrogen atoms bonded to silicon atoms within each molecule and is included in an amount which provides a molar ratio of the hydrogen atoms bonded to silicon atoms within the organohydrogenpolysiloxane relative to the alkenyl groups bonded to silicon atoms within the component within a range from 0.5 to 5, and wherein the amount of the platinum group metal-based catalyst, reported as a mass of the platinum group metal atoms relative to the mass of the organopolysiloxane of the component, is within a range from 1 to 2,000 ppm. 100 parts by mass of an organopolysiloxane having a polymerization degree of at least 100 and containing at least two alkenyl groups bonded to silicon atoms within each molecule, 10 to 100 parts by mass of a reinforcing silica having a specific surface area measured by a BET method of at least 50 m 2 /g, 0.01 to 10 parts by mass of a zirconia-ceria solid solution, and an effective amount of a curing agent composed of an organic peroxide in an amount within a range from 0.1 to 10 parts by mass relative to 100 parts by mass of the component, or a combination of an organohydrogenpolysiloxane and a platinum group metal-based catalyst, wherein the organohydrogenpolysiloxane contains at least two hydrogen atoms bonded to silicon atoms within each molecule and is included in an amount which provides a molar ratio of the hydrogen atoms bonded to silicon atoms within the organohydrogenpolysiloxane relative to the alkenyl groups bonded to silicon atoms within the component within a range from 0.5 to 5, and wherein the amount of the platinum group metal-based catalyst, reported as a mass of the platinum group metal atoms relative to the mass of the organopolysiloxane of the component, is within a range from 1 to 2,000 ppm. an organic peroxide in an amount within a range from 0.1 to 10 parts by mass relative to 100 parts by mass of the component, or a combination of an organohydrogenpolysiloxane and a platinum group metal-based catalyst, wherein the organohydrogenpolysiloxane contains at least two hydrogen atoms bonded to silicon atoms within each molecule and is included in an amount which provides a molar ratio of the hydrogen atoms bonded to silicon atoms within the organohydrogenpolysiloxane relative to the alkenyl groups bonded to silicon atoms within the component within a range from 0.5 to 5, and wherein the amount of the platinum group metal-based catalyst, reported as a mass of the platinum group metal atoms relative to the mass of the organopolysiloxane of the component, is within a range from 1 to 2,000 ppm.