A method, combination or apparatus for compensating for or predicting the
shift in the human perception of color which occurs when the color is
seen on a small surface area as compared with when it is seen extending
over of large surface area. The compensation or prediction is performed
by increasing (compensation) or decreasing (prediction) the lightness and
chroma of the color in a specified way. The invention allows choosers of
color to take account of the shifts when making their choice of colors
and is useful in choosing colors for paints, plastics, textiles or
illuminated surfaces.