Someone correct me if I'm wrong but the lower the #, the brighter it is.Originally Posted by fastboyamin
As far as color its like this: 4300 =yellow, 6000=white, 8000=blue, 9300=blueish purple, 12000=purple.
If you want white light with Sylvania bulbs, get the silverstars. The Cool Blues are the ones I have and they used to light up blue. The pos blue tint wore off very quickly and I ended up with yellow light again. LOL.