Source Crayola® CSS3 CSS4
#757970
 
#757575
sonic silver
#808080
grey
#808080
grey
#dcd7c6
 
#dbd7d2
timberwolf
#d3d3d3
light gray
#d3d3d3
lightgrey
#2e2e2b
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#5a574c
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen