What color is Drawing, Design for an Oratory (Memorial Chapel), ca. 1820 ?

Source Crayola® CSS3 CSS4
#889bc0
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#546c8a
 
#4a646c
deep space sparkle
#708090
slate gray
#708090
slategrey
#7d8390
 
#95918c
gray
#778899
light slate grey
#778899
lightslategrey
#525a5e
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey
#9f9d95
 
#95918c
gray
#a9a9a9
dark gray
#a9a9a9
darkgrey