Hex #153f2b or rgb(21,63,43) in RGB space is the tint of teal. It has hue angle of 151.43 degrees, value = 25 and saturation = 67. #153f2b can be obtained by mixing 4 colors: 1 drop of red, 3 drops of blue, 3 drops of green, 5 drops of black.
Nearest safe hex - #003333. Below you can see the block with #153f2b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #153f2b to the mixer and play with it.