What color is Photograph, Photograph of the Construction of a Mass-operational House Designed by Hector Guimard (No. 39), 1921 ?

Source Crayola® CSS3 CSS4
#c7c3b8
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#a29d99
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#423d37
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#635e50
 
#6e5160
eggplant
#696969
dim grey
#696969
dimgrey
#867f6e
 
#8a795d
shadow
#808080
grey
#808080
grey