I have the brightest white ones they sold,, I tried blue but they were a little weaker... Please remember this...Due to the very small size of the led's.. You most likely won't be able to see too far in front of you.. maybe a few feet, so don't worry too much about white or blue.. the main thing is it looks great when you run your car/truck in the dark.... It's pretty cool when the truck comes towards you and you are blinded by the headlights... and when it passes you see the red tailights........