what is the wavelength of brown, and beige, or white? As colors are not uniquely defined by their wavelength there is no linear one dimensional ordering of col

what is the wavelength of brown, and beige, or white? As colors are not uniquely defined by their wavelength there is no linear one dimensional ordering of colors. It's more like cube: http://goo.gl/aCp5X http://goo.gl/aCp5X So now the questions is how to sort it anyway if you need to, which dimension are you going to choose?