Hex #005f6f or rgb(0,95,111) in RGB space is the tint of bluish cian. It has hue angle of 188.65 degrees, value = 44 and saturation = 100. #005f6f can be obtained by mixing 4 colors: 5 drops of blue, 1 drop of cyan, 2 drops of green, 2 drops of black.
Nearest safe hex - #006666. Below you can see the block with #005f6f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #005f6f to the mixer and play with it.