β
Gunmetal
#5b6b6f

#5b6b6f
Primary red
5B₁₆ = 91
91/255 ≈ 36 %
Primary green
6B₁₆ = 107
107/255 ≈ 42 %
Primary blue
6F₁₆ = 111
111/255 ≈ 44 %
Basic colors
91/255 ≈ 36 % 16/255 ≈ 6 % 4/255 ≈ 2 % 144/255 ≈ 56 %