Source Crayola® CSS3 CSS4
#d0d2be
 
#cdc5c2
silver
#d3d3d3
light gray
#d3d3d3
lightgrey
#7d7a70
 
#757575
sonic silver
#808080
grey
#808080
grey
#5e4f40
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen