are a scheme of colors all formed from one base color. A.
Monochromatic colors

B.
Neutral colors

C.
Tints

D.
Shades

monochromatic

Explanation:

I took art classes for 3 years and I always knew that a monochromatic "drawing" or "picture" was something that contained one "base color".

ex. blue, it could be royal blue, light blue, navy blue, as long as they were in the same base, it's monochromatic.

mono = "only"

chromatic = (technically) "color"

monochromatic = "only (one) color"

also, don't confuse "shade" with "color". ex. color is blue, but the shade is light blue. you can have many different shades in a monochromatic "picture", but you can only have one color. :)

i'm not too sure - if you could attach the picture