What color is Border (France) ?

Source Crayola® CSS3 CSS4
#6f9cc0
 
#6699cc
blue gray
#5f9ea0
cadet blue
#5f9ea0
cadetblue
#2f476b
 
#1a4876
midnight blue
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey