Source Crayola® CSS3 CSS4
#717c87
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#4a4f57
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#2a2a30
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#97a7b5
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey