Source Crayola® CSS3 CSS4
#28271b
 
#000000
black
#000000
black
#000000
black
#5d668e
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#3f465d
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#c7c1bc
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#80828f
 
#95918c
gray
#778899
light slate grey
#778899
lightslategrey