What color is Button (England) ?

Source Crayola® CSS3 CSS4
#3e41a8
 
#324ab2
violet blue
#483d8b
dark slate blue
#483d8b
darkslateblue
#9596a1
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#727499
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey