Originally Posted by vipor

4300K

100% sure.

if you'd like a more white look with a slight tint of blue, go with 6000K. higher than that will look more blue, then purple around the 12000K area.

EDIT: I was looking at the bulb from a Lexus RX (my brother guts the projector from the headlight housing for his Jeep and Rhino) the other day and they used a Philips D2S 85122. I looked it up and it was also 4300K. Might be a viable option to look into.