What color is Sidewall, Duke of York ?

Source Crayola® CSS3 CSS4
#a5aead
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#aeb9a1
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey
#868975
 
#757575
sonic silver
#808080
grey
#808080
grey
#696a5e
 
#6e5160
eggplant
#696969
dim grey
#696969
dimgrey
#454441
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey