Hex #154547 or rgb(21,69,71) in RGB space is the tint of cyan. It has hue angle of 182.40 degrees, value = 28 and saturation = 70. #154547 can be obtained by mixing 4 colors: 1 drop of magenta, 4 drops of blue, 3 drops of green, 4 drops of black.
Nearest safe hex - #003333. Below you can see the block with #154547 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #154547 to the mixer and play with it.