What color is Porcelain Button Button, ca. 1860 ?

Source Crayola® CSS3 CSS4
#898873
 
#9f8170
beaver
#808080
grey
#808080
grey
#605952
 
#6e5160
eggplant
#696969
dim grey
#696969
dimgrey
#d3d1bf
 
#cdc5c2
silver
#d3d3d3
light gray
#d3d3d3
lightgrey
#442434
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey