β
Gunmetal
#425a51

#425a51
Primary red
42₁₆ = 66
66/255 ≈ 26 %
Primary green
5A₁₆ = 90
90/255 ≈ 35 %
Primary blue
51₁₆ = 81
81/255 ≈ 32 %
Basic colors
66/255 ≈ 26 % 15/255 ≈ 6 % 9/255 ≈ 4 % 165/255 ≈ 65 %