What color is Poster, Stop Militarism in Our Schools! ?

Source Crayola® CSS3 CSS4
#504c47
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#627057
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey
#78776f
 
#757575
sonic silver
#808080
grey
#808080
grey
#9d5d57
 
#a5694f
sepia
#a0522d
sienna
#a0522d
sienna