What color is Drawing, Cooper Union, Illustration for New York Central's University Dining Car Menu Series ?

Source Crayola® CSS3 CSS4
#a7a499
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#7b7870
 
#757575
sonic silver
#808080
grey
#808080
grey
#56544f
 
#414a4c
outer space
#696969
dim grey
#696969
dimgrey
#2f2f2c
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey