Source Crayola® CSS3 CSS4
#434857
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#616f8a
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#978386
 
#95918c
gray
#808080
grey
#808080
grey
#89676e
 
#8a795d
shadow
#808080
grey
#808080
grey
#adae88
 
#bab86c
olive green
#a9a9a9
dark gray
#a9a9a9
darkgrey