Source Crayola® CSS3 CSS4
#393e47
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#2c1e1f
 
#000000
black
#000000
black
#000000
black
#9ca5a5
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#747a7d
 
#757575
sonic silver
#808080
grey
#808080
grey