Source Crayola® CSS3 CSS4
#637f8b
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#7e999c
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey
#abb5a9
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey
#c2a8b6
 
#b0b7c6
cadet blue
#c0c0c0
silver
#c0c0c0
silver