Hex #2b5a9d or rgb(43,90,157) in RGB space is the tint of blue. It has hue angle of 215.26 degrees, value = 62 and saturation = 73. #2b5a9d can be obtained by mixing 3 colors: 4 drops of blue, 1 drop of white, 1 drop of black.
Nearest safe hex - #336699. Below you can see the block with #2b5a9d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #2b5a9d to the mixer and play with it.