β
Shaded Gray
#636666

#636666
Primary red
63₁₆ = 99
99/255 ≈ 39 %
Primary green
66₁₆ = 102
102/255 ≈ 40 %
Primary blue
66₁₆ = 102
102/255 ≈ 40 %
Basic colors
99/255 ≈ 39 % 3/255 ≈ 1 % 153/255 ≈ 60 %