Source Crayola® CSS3 CSS4
#969ea8
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#4b567e
 
#4a646c
deep space sparkle
#483d8b
dark slate blue
#483d8b
darkslateblue
#73819b
 
#757575
sonic silver
#778899
light slate grey
#778899
lightslategrey