What color is Sidewall (possibly USA) ?

Source Crayola® CSS3 CSS4
#919570
 
#87a96b
asparagus
#808080
grey
#808080
grey
#3d4b3e
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#606a55
 
#6e5160
eggplant
#696969
dim grey
#696969
dimgrey
#cacabd
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver