Source Crayola® CSS3 CSS4
#677f87
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#c0c6cb
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#334d56
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#879da2
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey