Hex #1a3e66 or rgb(26,62,102) in RGB space is the tint of blue. It has hue angle of 211.58 degrees, value = 40 and saturation = 75. #1a3e66 can be obtained by mixing 4 colors: 1 drop of magenta, 2 drops of blue, 2 drops of cyan, 5 drops of black.
Nearest safe hex - #333366. Below you can see the block with #1a3e66 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a3e66 to the mixer and play with it.