What color is Card ?

Source Crayola® CSS3 CSS4
#30322f
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#51534e
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#707a75
 
#757575
sonic silver
#808080
grey
#808080
grey
#87bed2
 
#a2add0
wild blue yonder
#87ceeb
sky blue
#87ceeb
skyblue
#898370
 
#8a795d
shadow
#808080
grey
#808080
grey