What color is Photograph, Photograph of the Construction of a Mass-operational House Designed by Hector Guimard (No. 20) ?

Source Crayola® CSS3 CSS4
#95928b
 
#95918c
gray
#808080
grey
#808080
grey
#777061
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#302f2c
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey