Since every computer display uses RGB color space, it cannot display most actually spectral colors. Mostly, even their primary colors are far from spectral, for example, sRGB's green.
I'd like to see the actual spectral colors as many as possible. Is there any commercially available reference to them?
EDIT: The reference must: 1) consist of many but discrete colors, 2) be available everywhere and anytime, and 3) specify the wavelength of each color.