what is the color of a fabric that absorbs electromagnetic radiation of wavelengths between 400 and 500nm

Either of the three colors

Violet, indigo, Blue

Explanation:

The different ranges of color produced as per the electromagnetic spectrum are as follows

• Violet: 400 - 420 nm

• Indigo: 420 - 440 nm

• Blue: 440 - 490 nm

• Green: 490 - 570 nm

• Yellow: 570 - 585 nm

• Orange: 585 - 620 nm

• Red: 620 - 780 nm

A material absorbing light in the range of 400-500 nm can have three colors -

• Violet: 400 - 420 nm

• Indigo: 420 - 440 nm

• Blue: 440 - 490 nm