What color is Sidewall (USA) ?

Source Crayola® CSS3 CSS4
#a3aeba
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey
#6e7c88
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#5d5965
 
#6e5160
eggplant
#696969
dim grey
#696969
dimgrey