100/0

#c6c6c6

90/10

#b2b2b2

80/20

#9e9e9e

70/30

#8b8b8b

60/40

#777777

50/50

#636363

40/60

#4f4f4f

30/70

#3b3b3b

20/80

#282828

10/90

#141414

0/100

#000000