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Prussian Blue
#263c66

#263c66
Primary red
26₁₆ = 38
38/255 ≈ 15 %
Primary green
3C₁₆ = 60
60/255 ≈ 24 %
Primary blue
66₁₆ = 102
102/255 ≈ 40 %
Basic colors
38/255 ≈ 15 % 22/255 ≈ 9 % 42/255 ≈ 16 % 153/255 ≈ 60 %