Source Crayola® CSS3 CSS4
#2f2b2d
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#5872b1
 
#5d76cb
indigo
#4682b4
steel blue
#4682b4
steelblue
#91919c
 
#95918c
gray
#778899
light slate grey
#778899
lightslategrey