Munsell Color Space
Munsell hue, value and chroma can be varied independently so that all colors can be arranged according to the three attributes in a three-dimensional space. The neutral colors are placed along a vertical line, called the “neutral axis,” with black at the bottom, white at the top, and all grays in between. The different hues are displayed at various angles around the neutral axis. The chroma scale is perpendicular to the axis, increasing outward. This three-dimensional arrangement of colors is called the “Munsell color space.”
Munsell Color Solid
All colors lie within a specific region of Munsell color space called the “Munsell color solid.” Hue is limited to one turn around the circle. The scale of value is limited on the lower end by pure black, which is as dark as a color can be, and on the top by pure white, which is as light as a color can be. For a given value, there is a limit to the chroma that is possible, even with theoretically ideal coloring agents. Real coloring agents, with less than ideal characteristics, impose further limitations on physical representations of the color solid. The Munsell Color Order System itself is applicable to all possible colors. The highest chroma yellow colors have rather high values, while the highest chroma blue colors have lower values.