Munsell Color Code
Munsell color is recorded as alpha-numeric Hue Value/Chroma, H V/C (for example, 7.5YR 5/4 or 5R 6/4); neutral colors, lacking a hue tone, (chroma = 0) are designated with a hue of N and omit chroma or list it as zero (N 3/ or N 3/0).