Hex #20618b or rgb(32,97,139) in RGB space is the tint of blue. It has hue angle of 203.55 degrees, value = 55 and saturation = 77. #20618b can be obtained by mixing 4 colors: 1 drop of red, 5 drops of blue, 1 drop of cyan, 1 drop of green.
Nearest safe hex - #336699. Below you can see the block with #20618b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #20618b to the mixer and play with it.