Various methods for quantifying gloss are described including psychophysical scaling, spectro-photometric measurement, and the use of a novel system based on digital imaging. Eighty-four samples covering a wide range of colour gamut and gloss level were assessed for gloss by a number of observers using a magnitude estimation method. Measurements made using two gloss-meters agreed only reasonably well with the visual results. A new measure, based on the difference between the CIE Y tristimulus values of the same sample, measured using a sphere-based spectrophotometer with specular included and excluded geometries, gave excellent agreement to the visual results. An imaging-based technique was established that used a distance profile method to give very good predictions of these visual results.