What color is Magazine Cover, Engineering Aesthetics ?

Source Crayola® CSS3 CSS4
#c8d2db
 
#c5d0e6
periwinkle
#d3d3d3
light gray
#d3d3d3
lightgrey
#436184
 
#4a646c
deep space sparkle
#483d8b
dark slate blue
#483d8b
darkslateblue