GE Lighting 22731 25-Watt 1900-Lumen Specialty A19 Incandescent Light Bulb, Purple A19 shape with medium base for use in table lamps and enclosed fixtures Uses 25-watts Lasts 1.8 years based on 3 hours per day usage Estimated yearly energy costs $3.01 based on 3 hours per day $0.11 per kWh Purple light bulb