What color is Blueprint, Apartment house, Rue Heine, Plan du 4e Etage ?

Source Crayola® CSS3 CSS4
#517b99
 
#2e5894
b'dazzled blue
#4682b4
steel blue
#4682b4
steelblue
#8ca7b2
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey