β
Gunmetal
#5b6664

#5b6664
Primary red
5B₁₆ = 91
91/255 ≈ 36 %
Primary green
66₁₆ = 102
102/255 ≈ 40 %
Primary blue
64₁₆ = 100
100/255 ≈ 39 %
Basic colors
91/255 ≈ 36 % 9/255 ≈ 4 % 2/255 ≈ 1 % 153/255 ≈ 60 %