Hex #2d5b7d or rgb(45,91,125) in RGB space is the tint of blue. It has hue angle of 205.50 degrees, value = 49 and saturation = 64. #2d5b7d can be obtained by mixing 4 colors: 3 drops of red, 5 drops of blue, 5 drops of cyan, 4 drops of black.
Nearest safe hex - #336666. Below you can see the block with #2d5b7d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #2d5b7d to the mixer and play with it.