What color is Sketchbook Folio, Madonna in Glory, Study after Bartolomeo Passeroti Bologna; Architectural Details ?

Source Crayola® CSS3 CSS4
#a19077
 
#9f8170
beaver
#bc8f8f
rosy brown
#bc8f8f
rosybrown
#6e5947
 
#6e5160
eggplant
#696969
dim grey
#696969
dimgrey
#4d433c
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey