Hex #1a3e55 or rgb(26,62,85) in RGB space is the tint of blue. It has hue angle of 203.39 degrees, value = 33 and saturation = 69. #1a3e55 can be obtained by mixing 4 colors: 1 drop of red, 2 drops of blue, 2 drops of cyan, 5 drops of black.
Nearest safe hex - #333366. Below you can see the block with #1a3e55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a3e55 to the mixer and play with it.