Hex #004455 or rgb(0,68,85) in RGB space is the tint of bluish cian. It has hue angle of 192.00 degrees, value = 33 and saturation = 100. #004455 can be obtained by mixing 3 colors: 1 drop of blue, 2 drops of cyan, 5 drops of black.
Nearest safe hex - #003366. Below you can see the block with #004455 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #004455 to the mixer and play with it.