β
Shaded Gray
#646664

#646664
Primary red
64₁₆ = 100
100/255 ≈ 39 %
Primary green
66₁₆ = 102
102/255 ≈ 40 %
Primary blue
64₁₆ = 100
100/255 ≈ 39 %
Basic colors
100/255 ≈ 39 % 2/255 ≈ 1 % 153/255 ≈ 60 %