Source Crayola® CSS3 CSS4
#2d3d3b
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#8b8684
 
#95918c
gray
#808080
grey
#808080
grey
#788682
 
#757575
sonic silver
#808080
grey
#808080
grey