Hex #144e42 or rgb(20,78,66) in RGB space is the tint of greenish cian. It has hue angle of 167.59 degrees, value = 31 and saturation = 74. #144e42 can be obtained by mixing 4 colors: 1 drop of magenta, 4 drops of blue, 4 drops of green, 4 drops of black.
Nearest safe hex - #006633. Below you can see the block with #144e42 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #144e42 to the mixer and play with it.