Hex #176b8b or rgb(23,107,139) in RGB space is the tint of bluish cian. It has hue angle of 196.55 degrees, value = 55 and saturation = 83. #176b8b can be obtained by mixing 4 colors: 3 drops of blue, 3 drops of cyan, 1 drop of white, 4 drops of black.
Nearest safe hex - #006699. Below you can see the block with #176b8b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #176b8b to the mixer and play with it.