The Munsell color method is one system that specifies colors based on three color dimensions, hue, value, and chroma (difference from gray at a given hue and lightness).
Professor Albert H. Munsell, an artist, wanted to generate a “rational approach to describe color” in accordance with the principle of “perceived equidistance”, and that would use decimal notation instead of color names (which he felt were “foolish” and “misleading”). He first started work with the machine in 1898 and published it entirely form colored Notation in 1905. The munsell color chart remains used today.
Munsell constructed his system around a circle with ten segments, arranging its colors at equal distances and selecting them in a way that opposing pairs would lead to an achromatic mixture.
The program is made up of an irregular cylinder together with the value axis (light/dark) running up and down through it, along with the axis of your earth.
Dark colors are at the end from the tree and lightweight at the very top, measured from 1 (dark) to 10 (light).
Each horizontal “slice” from the cylinder over the axis is really a hue circle, which he divided into five principal hues: red, yellow, green, blue, and purple, five intermediates, yellow-red, green-yellow, blue-green, purple-blue, and red-purple.
Munsell hue is specified by selecting one of these simple ten hues, and after that talking about the angle inside them from 1 to 10.
“Chroma” was measured outside the center of the wheel, with lower chroma being less saturated (washed out, for example pastels). Note that there is absolutely no intrinsic upper limit to chroma. Different regions of colour space have different maximal chroma coordinates. For instance light yellow colors have significantly more potential chroma than light purples, due to the nature in the eye along with the physics of color stimuli. This triggered an array of possible chroma levels, plus a chroma of 10 may or may not be maximal based on the hue and value.
One is fully specified by 85dexupky the 3 numbers. For instance a fairly saturated blue of medium lightness can be 5B 5/10 with 5B meaning colour in the midst of the blue hue band, 5/ meaning medium lightness, as well as a chroma of 10.
The very first embodiment of your system (the 1905 Atlas) had some deficiencies like a physical representation of your theoretical system. These were improved significantly in the 1929 Munsell Book of Color and thru a thorough group of experiments performed by the Optical Society of America from the 1940’s leading to the notations (sample definitions) for your modern Munsell Book of Color. The system remains to be popular in a range of applications and represents among the finest available data sets on the perceptual scaling of lightness, chroma and hue.
Advantages: A relatively simple system for comparing colors of objects by assigning them a collection of numbers based upon standard samples. Commonly used in practical applications like painting and textiles.
Disadvantages: Complementary colors will not be on opposite sides, in order that one cannot predict the final results of color mixing well.