Hex #00684b or rgb(0,104,75) in RGB space is the tint of greenish cian. It has hue angle of 163.27 degrees, value = 41 and saturation = 100. #00684b can be obtained by mixing 4 colors: 4 drops of blue, 2 drops of cyan, 5 drops of green, 5 drops of black.
Nearest safe hex - #006633. Below you can see the block with #00684b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #00684b to the mixer and play with it.