What color is Sidewall (France) ?

Source Crayola® CSS3 CSS4
#687e8e
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#9c713d
 
#9c7c38
metallic sunburst
#a0522d
sienna
#a0522d
sienna
#8d9b9d
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey
#807763
 
#8a795d
shadow
#696969
dim grey
#696969
dimgrey
#4b5a66
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey