What color is Key ?

Source Crayola® CSS3 CSS4
#2f251f
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#59514a
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen
#8a847e
 
#95918c
gray
#808080
grey
#808080
grey