Source Crayola® CSS3 CSS4
#6b7284
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#9092a0
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey
#4e5163
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey