What color is Photograph, Photograph of the Construction of a Mass-operational House Designed by Hector Guimard (No. 34) ?

Source Crayola® CSS3 CSS4
#d0cac2
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#837f73
 
#757575
sonic silver
#808080
grey
#808080
grey
#4f4d45
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey