What color is Photograph, Photograph of the Construction of a Mass-operational House Designed by Hector Guimard (No. 40) ?

Source Crayola® CSS3 CSS4
#d4cdbd
 
#cdc5c2
silver
#d3d3d3
light gray
#d3d3d3
lightgrey
#7b7466
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#42413d
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey