What color is Border (France), 1800–1830 ?

Source Crayola® CSS3 CSS4
#375457
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#263539
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#86bb96
 
#6dae81
forest green
#8fbc8f
dark sea green
#8fbc8f
darkseagreen
#637e7b
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#a9b6ac
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey