Source Crayola® CSS3 CSS4
#8aa8af
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#29486e
 
#1a4876
midnight blue
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#426584
 
#4a646c
deep space sparkle
#483d8b
dark slate blue
#483d8b
darkslateblue
#64879a
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey