Source Crayola® CSS3 CSS4
#9ca5a2
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#555e70
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey
#6f7c86
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey