What color is Blueprint, Apartment House, Rue Heine, Plan des Etages 1e et 2e ?

Source Crayola® CSS3 CSS4
#5a81a4
 
#5d76cb
indigo
#4682b4
steel blue
#4682b4
steelblue
#90a9b8
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey