Source Crayola® CSS3 CSS4
#b0bab4
 
#b0b7c6
cadet blue
#c0c0c0
silver
#c0c0c0
silver
#8d9c9f
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey
#687680
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#dde2d3
 
#dbd7d2
timberwolf
#dcdcdc
gainsboro
#dcdcdc
gainsboro