What color is Sketchbook Folio, Unfinished Study of Mountains, 1870–85 ?

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#b8ac9b
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#968979
 
#9f8170
beaver
#808080
grey
#808080
grey
#6e6354
 
#6e5160
eggplant
#696969
dim grey
#696969
dimgrey