Efficiency of color naming, following Zaslavsky et al. (2018). The dashed line is the IB theoretical limit of efficiency for color naming, indicating the greatest possible accuracy for each level of complexity. The color naming systems of the WCS are shown in blue, replicating the findings of Zaslavsky et al. (2018). Our randomly generated Gaussian systems are shown in orange. The Gaussian systems are often closer to the IB curve than the WCS systems are. The inset shows the nine color systems of Fig. 1, with the dissimilar Gaussian systems shown as +.