Is there actual scientific research that supports this? I don't know about OP, but in painting and in video/film art pure black and white are encouraged to be

Is there actual scientific research that supports this? I don't know about OP, but in painting and in video/film art pure black and white are encouraged to be avoided. There they are called superblack and superwhite. In paintings it's because there is rarely (or not at all) such color in nature and in video (same for painting) also because it used to degrade signal for some reason in analogue era (strong yellow was avoided as well).