Source Crayola® CSS3 CSS4
#505857
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#757c74
 
#757575
sonic silver
#808080
grey
#808080
grey
#9da194
 
#95918c
gray
#a9a9a9
dark gray
#a9a9a9
darkgrey