Hex #1c3a4c or rgb(28,58,76) in RGB space is the tint of blue. It has hue angle of 202.50 degrees, value = 30 and saturation = 63. #1c3a4c can be obtained by mixing 3 colors: 1 drop of yellow, 4 drops of blue, 4 drops of black.
Nearest safe hex - #333333. Below you can see the block with #1c3a4c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1c3a4c to the mixer and play with it.