What color is Drawing, Study for The Making of Glass, The Treasure Hid in the Sand, Plate 363, Physica Sacra ?

Source Crayola® CSS3 CSS4
#888176
 
#757575
sonic silver
#808080
grey
#808080
grey
#a69f92
 
#95918c
gray
#a9a9a9
dark gray
#a9a9a9
darkgrey
#66635e
 
#6e5160
eggplant
#696969
dim grey
#696969
dimgrey