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What is the difference between black light and black light blue… I'm confused!?

A face that is covered with glow in the dark paint spots and glitter in Rheinfelden
Photo by h heyerlein / Unsplash

Blacklight Blue

Blacklight blue produces the popular special effect light that you see at arcades and discos. It makes things with phosphorescent reactive properties glow, white teeth for example. These lights are often referred to as hippy lights because of their surge in popularity in the 60s. They employ “Wood's Glass” which is nickel-oxide-doped glass. Or in layman terms; an exterior coating that blocks most visible light and allows ultraviolet through.


Black Light bulbs are typically used for bug zappers. They do not use “Wood's Glass”, they employ a U.V. transmissive glass. When not alight they appear white, when on they appear electric blue. They attract and dispose of flies keeping your eating space or kitchen bug free.

**Colour Code**



Actinic 05BlacklightFor use in fly traps
Colour 08Blacklight BlueTheatrical use

Created by Steve Ellwood on 27th July, 2015


Steve Ellwood

Steve Ellwood

Qualified as an Electrician, founder of BLT Direct