What color is Drawing, Museum of the Earth,Ithaca, New York [Perspective View with Sky] ?

Source Crayola® CSS3 CSS4
#343438
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#bfcbd8
 
#c5d0e6
periwinkle
#b0c4de
light steel blue
#b0c4de
lightsteelblue
#69656c
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#6da9ce
 
#6699cc
blue gray
#6495ed
cornflower blue
#6495ed
cornflowerblue
#9996a0
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey