Source Crayola® CSS3 CSS4
#4c4e52
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#95868e
 
#95918c
gray
#808080
grey
#808080
grey
#836c7d
 
#757575
sonic silver
#808080
grey
#808080
grey