What color is Drawing, Study for an Exhibition Annoucement ?

Source Crayola® CSS3 CSS4
#2f2d2b
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#7683c2
 
#6699cc
blue gray
#9370d8
medium purple
#778899
lightslategrey
#b66831
 
#b4674d
brown
#a0522d
sienna
#a0522d
sienna
#616791
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#83768d
 
#757575
sonic silver
#808080
grey
#808080
grey