What color is Sidewall (France) ?

Source Crayola® CSS3 CSS4
#b2c5c4
 
#b0b7c6
cadet blue
#c0c0c0
silver
#c0c0c0
silver
#7899a3
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey
#567680
 
#4a646c
deep space sparkle
#708090
slate gray
#708090
slategrey