Source Crayola® CSS3 CSS4
#c1c0b6
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#8d91a1
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey
#707595
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey