Source Crayola® CSS3 CSS4
#272e33
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#607e8a
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#35556b
 
#4a646c
deep space sparkle
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#809ea5
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey
#5f5b4a
 
#6e5160
eggplant
#556b2f
dark olive green
#556b2f
darkolivegreen