Answer:
i will give you an a example so umm i hope it's helps for you
1.0
2.3
3. red
625–750 400–480 1.65–1.98
A spectral color is a color that is evoked in a typical human by a single wavelength of light in the visible spectrum, or by a relatively narrow band of wavelengths, also known as monochromatic light. Every wavelength of visible light is perceived as a spectral color, in a continuous spectrum; the colors of sufficiently close wavelengths are indistinguishable for the human eye.
The spectrum colors are the colors on the horseshoe-shaped curve on the outside of the diagram. All other colors are not spectral: the bottom line is the line of purples, whilst within the interior of the diagram are unsaturated colors that are various mixtures of a spectral color or a purple color with white, a grayscale color. White is in the central part of the interior of the diagram, since when all colors of light are mixed together, they produce white.
The spectrum is often divided into named colors, though any division is somewhat arbitrary; the spectrum is continuous. Traditional colors in English include: red, orange, yellow, green, cyan (sky-blue), blue ("true" blue), and violet. In some other languages the ranges corresponding to color names do not necessarily agree with those in English.
The divisionused by Isaac Newton, in his color wheel, was: red, orange, yellow, green, blue, indigo, and violet; a mnemonic for this order is "Roy G. Biv". Less commonly, "VIBGYOR" is also used for the reverse order. In modern divisions of the spectrum, indigo ("true" blue) is often omitted and the modern word cyan is used for sky-blue (which Newton called "blue").
