Source Crayola® CSS3 CSS4
#53504d
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#9d9993
 
#95918c
gray
#a9a9a9
dark gray
#a9a9a9
darkgrey
#7f7a74
 
#757575
sonic silver
#808080
grey
#808080
grey