What color is Print, Side Wall Elevation of the Riding Academy, Vienna ?

Source Crayola® CSS3 CSS4
#b6b3a4
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey
#949282
 
#95918c
gray
#808080
grey
#808080
grey
#797668
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#59544a
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen