What color is Blueprint, Apartment House, Rue Heine, Plan du 7e Etage ?

Source Crayola® CSS3 CSS4
#436b97
 
#2e5894
b'dazzled blue
#4682b4
steel blue
#4682b4
steelblue
#6586a6
 
#5d76cb
indigo
#778899
light slate grey
#778899
lightslategrey