Source Crayola® CSS3 CSS4
#75686a
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#719081
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#56536b
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey
#7f8888
 
#95918c
gray
#808080
grey
#808080
grey