Schettini, R.2014-10-212014-10-2119941467-8659https://doi.org/10.1111/1467-8659.1340211A method is presented which, given the RGB values of a colour stimulus displayed on a given cathode ray tube (to which a CIE XYZ triple corresponds), makes it possible to find a spectral reflectance function characterizing an object colour. Such an object when"illuminated" by a given illuminant produces a metameric spectral power distribution, that is, one with the same XYZ tristimulus values. The method is useful in the colorimetric matching of colours on different media or supports.10.1111/1467-8659.1340211211-217