Source Crayola® CSS3 CSS4
#d5d0c3
 
#cdc5c2
silver
#d3d3d3
light gray
#d3d3d3
lightgrey
#7a7970
 
#757575
sonic silver
#808080
grey
#808080
grey
#54544f
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey