Lights have different 'color temperature' but simply put the higher the K number (theoretical Temperature of an incandescent body), the more blue light.

So look for the ones marked 'Daylight' - or 5-6000 K. You used to be able to get incandescents that had a light blue 'gel coating' that made the light appear even higher temperature, but you probably can't get them now.

LED lights also come in different 'temperature ratings' too. These ratings also apply to fluorescents, and the CFLs as well.