Hex #00505f or rgb(0,80,95) in RGB space is the tint of bluish cian. It has hue angle of 189.47 degrees, value = 37 and saturation = 100. #00505f can be obtained by mixing 3 colors: 5 drops of blue, 2 drops of green, 2 drops of black.
Nearest safe hex - #006666. Below you can see the block with #00505f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #00505f to the mixer and play with it.