Source Crayola® CSS3 CSS4
#a6a090
 
#95918c
gray
#a9a9a9
dark gray
#a9a9a9
darkgrey
#7f7a6d
 
#757575
sonic silver
#808080
grey
#808080
grey
#393834
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey