W5 The Halco 90 watt Replacement #46203 CFL23/41/PAR38 Prolume Cool White 4100k is a high-quality light bulb designed to provide energy-efficient lighting in a PAR38 bulb shape. With a color temperature of 3500 - 4500 K Natural/Neutral and a warm white light color, this bulb is perfect for various lighting applications in your home or garden. Made by the reputable brand Halco, this bulb is sure to meet your lighting needs while also helping you to save energy.