What color is Blueprint, Design for Bureau ?

Source Crayola® CSS3 CSS4
#668bac
 
#6699cc
blue gray
#5f9ea0
cadet blue
#5f9ea0
cadetblue
#99b4c4
 
#a2add0
wild blue yonder
#a9a9a9
dark gray
#a9a9a9
darkgrey