Hex #006c8a or rgb(0,108,138) in RGB space is the tint of bluish cian. It has hue angle of 193.04 degrees, value = 54 and saturation = 100. #006c8a can be obtained by mixing 3 colors: 3 drops of blue, 5 drops of cyan, 5 drops of black.
Nearest safe hex - #006699. Below you can see the block with #006c8a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #006c8a to the mixer and play with it.