Hex #006d88 or rgb(0,109,136) in RGB space is the tint of bluish cian. It has hue angle of 191.91 degrees, value = 53 and saturation = 100. #006d88 can be obtained by mixing 3 colors: 1 drop of blue, 2 drops of cyan, 2 drops of black.
Nearest safe hex - #006699. Below you can see the block with #006d88 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #006d88 to the mixer and play with it.