β
Gunmetal
#556d66

#556d66
Primary red
55₁₆ = 85
85/255 ≈ 33 %
Primary green
6D₁₆ = 109
109/255 ≈ 43 %
Primary blue
66₁₆ = 102
102/255 ≈ 40 %
Basic colors
85/255 ≈ 33 % 17/255 ≈ 7 % 7/255 ≈ 3 % 146/255 ≈ 57 %