Source Crayola® CSS3 CSS4
#6c797c
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#595e5f
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey
#b3a09f
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey