Why does the color blue have higher UV reflectance properties than other colors?
Blue colors wouldn’t have to have higher UV reflectance than other colors and I am sure exceptions can be found. However, in general blue objects are reflecting highly in the short-wavelength end of the spectrum and that reflectance continues into the UV. Another way to look at it is that the wavelengths they tend to absorb are mainly longer than the the blue and UV wavelengths while other colors are largely absorbing the shorter wavelengths.
