What color is Card ?

Source Crayola® CSS3 CSS4
#50524a
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#79837e
 
#757575
sonic silver
#808080
grey
#808080
grey
#7d99a8
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey
#cab366
 
#bab86c
olive green
#bdb76b
dark khaki
#bdb76b
darkkhaki
#273030
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey