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Primary red

21₁₆ = 33

33/255 ≈ 13 %

Primary green

8C₁₆ = 140

140/255 ≈ 55 %

Primary blue

7F₁₆ = 127

127/255 ≈ 50 %

Basic colors

33/255 ≈ 13 % 94/255 ≈ 37 % 13/255 ≈ 5 % 115/255 ≈ 45 %