Source Crayola® CSS3 CSS4
#010b29
 
#000000
black
#000000
black
#000000
black
#677b80
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#3f5b68
 
#4a646c
deep space sparkle
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#15374c
 
#1a4876
midnight blue
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#879695
 
#95918c
gray
#778899
light slate grey
#778899
lightslategrey