What color is Picture, Season's Greetings, Cooper Union ?

Source Crayola® CSS3 CSS4
#5a5347
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen
#7e7969
 
#757575
sonic silver
#808080
grey
#808080
grey
#9c9682
 
#95918c
gray
#bc8f8f
rosy brown
#bc8f8f
rosybrown
#3c332b
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey