In 1926-1930 Wright and Guild conducted experiments on 15 independent observers. They compared the spectral color with a specific wavelength to a mixture of red

In 1926-1930 Wright and Guild conducted experiments on 15 independent observers. They compared the spectral color with a specific wavelength to a mixture of red (700 nm.), blue (435.8 nm.) and green (546.1 nm.). In 1931 the International Lighting Congress (CIE) adopted a characteristic of the color properties of the average (standard) observer, based on this results. Later, for comfort calculations, the International Lighting Congress introduced the abstract system CIE XYZ, based on unreal colors. This coordinate system is very comfort for the transition from one system to another. Also, the wavelengths of visible light and the corresponding coordinates of the CIE XYZ mixture were calculated, based on the results obtained for the RGB system (Wright and Guild). sRGB system of monitors have many non-spectral colors. The wave method is applied in this case (on "RGB" site page) to each of the three colors (red, green, blue) individually, not all colors are harmonious and you will have to make a choice manually. This method allows you to get more interesting combinations of colors, but requires a self-dependent choice.