6000K Xenon HID bulbs give off a very attractive white light with a touch of blue/purple hue to it. This is my favorite color temperature as far as Xenon headlights go. They have just the right combination of blue/purple hue, which attracts attention, but go overboard where they become annoying to oncoming traffic. I use this in my headlights and would never go back to stock Xenon bulbs, these look very nice. 6000K Xenon HID lights produce approximately 2900 lumens, much higher than regular halogen bulbs.
Not sure what bulb your car is using? Try this Automotive Bulb Reference
site to get the proper bulb information for your car.