Hex #00514f or rgb(0,81,79) in RGB space is the tint of cyan. It has hue angle of 178.52 degrees, value = 32 and saturation = 100. #00514f can be obtained by mixing 4 colors: 5 drops of blue, 1 drop of cyan, 3 drops of green, 5 drops of black.
Nearest safe hex - #006666. Below you can see the block with #00514f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #00514f to the mixer and play with it.