First ask where the Compact Florescent lights are or find them on your own. The highest you will probably find with the 6500K spectrum is 23W. They may say "Spring Cool or Spring Warm." If you cant find the K on the box, try to look at the bulb it should say. Sometimes you have to grab a differant box because the bulb is facing away from you and you can't see the writing.
Hope all this helps.
Adieu