β
Gunmetal
#515b5e

#515b5e
Primary red
51₁₆ = 81
81/255 ≈ 32 %
Primary green
5B₁₆ = 91
91/255 ≈ 36 %
Primary blue
5E₁₆ = 94
94/255 ≈ 37 %
Basic colors
81/255 ≈ 32 % 10/255 ≈ 4 % 3/255 ≈ 1 % 161/255 ≈ 63 %