![NCS S 2040-B NCS S 2040-B](/images/ncs-s-2040-b/thumbnail.webp)
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The first number 20 indicates the blackness of the color, which is the degree of similarity to black.
A color with 20% blackness is relatively light.
The second number 50 indicates the chromaticness of the color, which is the degree of departure from a gray of the same blackness.
This color with 50% chromaticness is moderately saturated.
The letter B indicates the hue of the color, which is the dominant wavelength of the light reflected by the color.
NCS S 2050-B with B hue is pure blue.