Source Crayola® CSS3 CSS4
#4f5453
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#323944
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#90a6af
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#828177
 
#757575
sonic silver
#808080
grey
#808080
grey
#6f8289
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey