Hex #2b4e72 or rgb(43,78,114) in RGB space is the tint of blue. It has hue angle of 210.42 degrees, value = 45 and saturation = 62. #2b4e72 can be obtained by mixing 3 colors: 1 drop of red, 4 drops of blue, 1 drop of green.
Nearest safe hex - #336666. Below you can see the block with #2b4e72 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #2b4e72 to the mixer and play with it.