“…However, to the best of our knowledge, color comparison in terms of fuzzy colors have been mostly neglected in the literature. Some fuzzy color comparison proposals based on histograms in images can be found [20,21,22], which are calculated on the basis of the frequency of appearance of certain colors in specific images, with several applications [23,24,25,26,27,28,29,30,31]. Nevertheless, in this paper we focus on comparing fuzzy colors not necessarily calculated on the basis of concrete images and/or frequencies.…”