Just FYI -- you will give different "color" explanations from different manufacturers. With that being said according to a true Kelvin color scale here are the main ones:
3500K -- warm white (yellowish like an incandescent or halogen bulb)
4500K -- pure white (this is the one closest to "white" that people are looking for)
5500K/6000K -- cool or bright white (this is where the bluish tint begins and is closer to Xenon headlights)
The best HID headlights I ever had were on my wife's Buick Enclave. They came from the factory at 4500K (and also articulated!) and were right on for pure white. Based on all this you should look for bulbs in the 4500K range if you don't want the bluish look.
Edited by sk, 30 March 2017 - 02:25 PM.