Monochromatic colors & negative spaace

1. Monochromatic color
2. Monochromatic colors are all the colors of a single hue. Monochromatic color schemes are derived from a single base hue and extended using its shades, tones and tints

Negative space the space around and between the subject(s) of an image. Negative space may be most evident when the space around a subject, not the subject itself, forms an interesting or artistically relevant shape, and such space occasionally is used to artistic effect as the "real" subject of an image.