Hex #1c5f8e or rgb(28,95,142) in RGB space is the tint of blue. It has hue angle of 204.74 degrees, value = 56 and saturation = 80. #1c5f8e can be obtained by mixing 4 colors: 1 drop of magenta, 2 drops of blue, 3 drops of cyan, 3 drops of black.
Nearest safe hex - #336699. Below you can see the block with #1c5f8e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1c5f8e to the mixer and play with it.