Hex #1a3d6f or rgb(26,61,111) in RGB space is the tint of blue. It has hue angle of 215.29 degrees, value = 44 and saturation = 77. #1a3d6f can be obtained by mixing 3 colors: 5 drops of blue, 1 drop of white, 4 drops of black.
Nearest safe hex - #333366. Below you can see the block with #1a3d6f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a3d6f to the mixer and play with it.