What defines a monochrome color scheme?

A monochrome color scheme is characterized by the use of variations of a single hue. This approach involves selecting one primary color and then manipulating its saturation and brightness to create different shades, tints, and tones. By doing so, artists can achieve a cohesive and harmonious look while exploring the depth and range of that single color.

Utilizing a monochromatic scheme allows for a focused visual experience, drawing attention to nuances and subtleties within that particular color. This can evoke specific emotions or create a particular atmosphere, as the use of variations can suggest movement and depth without the distraction of competing colors.

In contrast, the other answer choices involve the use of multiple colors, which does not align with the definition of a monochrome scheme. For example, employing a range of hues or complementary colors introduces diversity that is essential to those color schemes but counter to the singular focus of monochrome.