Source Crayola® CSS3 CSS4
#7a8998
 
#95918c
gray
#778899
light slate grey
#778899
lightslategrey
#868879
 
#757575
sonic silver
#808080
grey
#808080
grey
#53504c
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey