(square .(vconcat ..(y ...(t ....(lightness-from-rgb .....(average ......(adjust-hsl .......(y [-1.6988 0.361]) .......(hsl-from-rgb ........(saturation-from-rgb vsplasma))) ......(vfloor 1.8619))))) ..(saturation-from-rgb ...(rgb-from-hsl ....(rgb-from-hsl plasma)))))