What color is Button (England), late 18th century ?

Source Crayola® CSS3 CSS4
#454ea9
 
#324ab2
violet blue
#483d8b
dark slate blue
#483d8b
darkslateblue
#9aa1c2
 
#a2a2d0
blue bell
#a9a9a9
dark gray
#a9a9a9
darkgrey
#cacee0
 
#c5d0e6
periwinkle
#d3d3d3
light gray
#d3d3d3
lightgrey
#737cb6
 
#7366bd
blue violet
#778899
light slate grey
#778899
lightslategrey
#f9eac5
 
#eceabe
spring green
#ffe4c4
bisque
#ffe4c4
bisque