What color is Key ?

Source Crayola® CSS3 CSS4
#322b21
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#868079
 
#757575
sonic silver
#808080
grey
#808080
grey
#524b3d
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen