Is a black dress with a black shrug to black?

I always wear black nylons with a black dress in the evenings.. Absolutely you can. Perhaps go for an "off black" or "sheer black" color in the nylons. Pair that with pretty pumps or strappy sandals...

Yes but in the cloth industry there some 17 shades of black

Perfect black would be the inability for any light at all to reflect off the surface. A black hole is black because light cannot escape the gravitational pull.

well wat color pants are you wearing? if its black it would match, but the blue would stand out

Black appear black from a projector because the projector is not projecting any light at that spot. In the "colors of light", or light emissions system, black is the absence of color, while white...