What is the second darkest color?

The second darkest color is often considered to be "Vantablack," which is known for its extreme light-absorbing properties, reflecting only about 0.035% of visible light. However, since Vantablack is not a color in the traditional sense but rather a material, other candidates for the second darkest color in terms of pigment include "Black 3.0," developed by artist Stuart Semple. This pigment absorbs up to 98% of visible light, making it one of the darkest available to artists.