What color is Sidewall ?

Source Crayola® CSS3 CSS4
#b5c0bf
 
#b0b7c6
cadet blue
#c0c0c0
silver
#c0c0c0
silver
#6a6b63
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#3c3c37
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey