Source Crayola® CSS3 CSS4
#6f6f66
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#525756
 
#414a4c
outer space
#696969
dim grey
#696969
dimgrey
#a6b1a2
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#768579
 
#757575
sonic silver
#808080
grey
#808080
grey