What color is Bourdalou, ca. 1775 ?

Source Crayola® CSS3 CSS4
#b0aba0
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#8d8a81
 
#95918c
gray
#808080
grey
#808080
grey
#726964
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#53443f
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey