What color is Blueprint, Apartment House, Rue Heine, Plan du 8e Etage ?

Source Crayola® CSS3 CSS4
#537597
 
#2e5894
b'dazzled blue
#708090
slate gray
#708090
slategrey
#889bab
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey
#bcc3c6
 
#b0b7c6
cadet blue
#c0c0c0
silver
#c0c0c0
silver