What color is Card ?

Source Crayola® CSS3 CSS4
#303635
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#6f7772
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#8e9691
 
#95918c
gray
#778899
light slate grey
#778899
lightslategrey
#505853
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey