What color is Separation For Silkscreen ?

Source Crayola® CSS3 CSS4
#653428
 
#714b23
raw umber
#8b4513
saddle brown
#8b4513
saddlebrown
#705250
 
#6e5160
eggplant
#696969
dim grey
#696969
dimgrey
#857974
 
#757575
sonic silver
#808080
grey
#808080
grey