What color is Sidewall (USA) ?

Source Crayola® CSS3 CSS4
#1b232d
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#96a1ae
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#6c798a
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#2e232a
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#2a4152
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey