📦 CIEDE2000 color difference algorithm

from functorflow import ff

# ------ Returns the closest color ---------

color = { 'R': 255, 'G': 1, 'B': 30 }

#  red, green, blue

palette = [ {'R': 255, 'G': 0, 'B': 0 },
            {'R': 0, 'G': 255, 'B': 0 },
            {'R': 0, 'G': 0, 'B': 255} ]

print(ff('color-diff').closest(color, palette))
# {R: 255, G: 0, B: 0 }, red



# ------ Return the most different color -----------

color = { 'R': 255, 'G': 255, 'B': 255 };
# black, white
palette = [ {'R': 0, 'G': 0, 'B': 0 }, {'R': 255, 'G': 255, 'B': 255 } ];

print(ff('color-diff').furthest(color, palette)) 
# {'R': 0, 'G': 0, 'B': 0 }, black