What color is Book Cover, Essays on a Science of Mythology by C. G. Jung and C. Kerényi ?

Source Crayola® CSS3 CSS4
#5575a3
 
#5d76cb
indigo
#4682b4
steel blue
#4682b4
steelblue
#495368
 
#4a646c
deep space sparkle
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey