Source Crayola® CSS3 CSS4
#9aa5ae
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#647485
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#c3c0b0
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#999890
 
#95918c
gray
#a9a9a9
dark gray
#a9a9a9
darkgrey
#454f5a
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey