Using image: https://unsplash.com/new?photo=5RydGpXvpxE by Thomas Bühler
convert thomas-buhler-301493.jpg -colors 16 -depth 8 -format '%c' histogram:info:- \
| sort --reverse --numeric-sort
2580689: (174,175,188) #AEAFBC srgb(174,175,188)
2552855: (156,172,195) #9CACC3 srgb(156,172,195)
2532178: (181,193,206) #B5C1CE srgb(181,193,206)
2498111: ( 2, 22, 54) #021636 srgb(2,22,54)
2103417: (171,183,198) #ABB7C6 srgb(171,183,198)
1152417: (149,149,175) #9595AF srgb(149,149,175)
944167: ( 94,112,153) #5E7099 srgb(94,112,153)
929520: (120,133,171) #7885AB srgb(120,133,171)
864409: (211,198,200) #D3C6C8 srgb(211,198,200)
816953: (210,179,180) #D2B3B4 srgb(210,179,180)
740881: ( 49, 86,139) #31568B srgb(49,86,139)
545659: (156,109,120) #9C6D78 srgb(156,109,120)
520687: ( 68, 74,112) #444A70 srgb(68,74,112)
458231: ( 24, 46, 90) #182E5A srgb(24,46,90)
429733: ( 31, 34, 60) #1F223C srgb(31,34,60)
291949: (120,146,195) #7892C3 srgb(120,146,195)