Hex #3783aa or rgb(55,131,170) in RGB space is the tint of bluish cian. It has hue angle of 200.35 degrees, value = 67 and saturation = 68. #3783aa can be obtained by mixing 4 colors: 5 drops of blue, 3 drops of cyan, 3 drops of white, 3 drops of black.
Nearest safe hex - #339999. Below you can see the block with #3783aa color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #3783aa to the mixer and play with it.