What color is Card ?

Source Crayola® CSS3 CSS4
#515646
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen
#878675
 
#757575
sonic silver
#808080
grey
#808080
grey
#a7aa6c
 
#bab86c
olive green
#bdb76b
dark khaki
#bdb76b
darkkhaki
#2f352b
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#728563
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey