What color is Border (France), ca. 1800 ?

Source Crayola® CSS3 CSS4
#738b8b
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#4e4d48
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#586d70
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey
#956f51
 
#a5694f
sepia
#a0522d
sienna
#a0522d
sienna
#9f8969
 
#9f8170
beaver
#808080
grey
#808080
grey