What color is Drawing, Geometric Study for Hickok Belt Co., ca. 1929 ?

Source Crayola® CSS3 CSS4
#2a272b
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#db5615
 
#c46210
alloy orange
#d2691e
chocolate
#d2691e
chocolate
#97723f
 
#9c7c38
metallic sunburst
#a0522d
sienna
#a0522d
sienna
#4b3630
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey