Invisible Blue is clear under normal light and fluoresces light blue under black light.
Available in 9 brighter than normal colors which fluoresce vividly under ultraviolet lights, Rosco Fluorescent paints can create a wide range of exciting effects. They can be used to create special effects using ultraviolet Blacklight or combined with other Rosco paints to make normal colors more vibrant. Fluorescents use the same high quality, water base, vinyl acrylic binder found in Off Broadway paints. It is suitable for use on most surfaces and for interior and exterior* applications. Try using Rosco Fluorescent paints when matching the brightest colors in the Pantone Color Matching System or to achieve astounding 3-D effects.