What color is Border (France), 20th century ?

Source Crayola® CSS3 CSS4
#2f2f2b
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#ced5e0
 
#c5d0e6
periwinkle
#d3d3d3
light gray
#d3d3d3
lightgrey
#25160f
 
#000000
black
#000000
black
#000000
black
#a28d8a
 
#95918c
gray
#bc8f8f
rosy brown
#bc8f8f
rosybrown
#727c81
 
#757575
sonic silver
#808080
grey
#808080
grey