What color is Blueprint, Apartment house, Rue Heine, Depot des Malles ?

Source Crayola® CSS3 CSS4
#597f9c
 
#5d76cb
indigo
#708090
slate gray
#708090
slategrey
#809aa9
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey
#b9c3c4
 
#b0b7c6
cadet blue
#c0c0c0
silver
#c0c0c0
silver