What color is Panel (China), 19th century ?

Source Crayola® CSS3 CSS4
#414f4b
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#726f61
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#80897c
 
#757575
sonic silver
#808080
grey
#808080
grey
#504a40
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey