Hex #1a3b56 or rgb(26,59,86) in RGB space is the tint of blue. It has hue angle of 207.00 degrees, value = 34 and saturation = 70. #1a3b56 can be obtained by mixing 3 colors: 1 drop of yellow, 5 drops of blue, 4 drops of black.
Nearest safe hex - #333366. Below you can see the block with #1a3b56 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a3b56 to the mixer and play with it.