What color is Drawing, Triumphal Arch on an Ideal Piazza ?

Source Crayola® CSS3 CSS4
#bbb3af
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey
#8e867f
 
#95918c
gray
#808080
grey
#808080
grey
#30322e
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#4c5456
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey