What color is Playing Card ?

Source Crayola® CSS3 CSS4
#918395
 
#95918c
gray
#778899
light slate grey
#778899
lightslategrey
#776487
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#48454b
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey