N

Nagel anomaloscopeNagel charts

Nanometer (nm)
Used in colour science as a unit of measure to define the wavelength of visible light (approximately 400 - 700 nm). 1 nm = 10^-9 mm.

NBS
National Bureau of Standards.

NBS unit of colour difference

Neutral colours

Neutral point

Night vision

Nimeroff

Nonspectral colours

Normal vision

NTSC primaries

Nu-Hue custom colour system

Nu-Hue colour coordinator