Hex #1a365e or rgb(26,54,94) in RGB space is the tint of blue. It has hue angle of 215.29 degrees, value = 37 and saturation = 72. #1a365e can be obtained by mixing 3 colors: 4 drops of blue, 1 drop of white, 5 drops of black.
Nearest safe hex - #333366. Below you can see the block with #1a365e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a365e to the mixer and play with it.