Hex #448c7d or rgb(68,140,125) in RGB space is the tint of greenish cian. It has hue angle of 167.50 degrees, value = 55 and saturation = 51. #448c7d can be obtained by mixing 4 colors: 5 drops of blue, 4 drops of green, 4 drops of white, 2 drops of black.
Nearest safe hex - #339966. Below you can see the block with #448c7d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #448c7d to the mixer and play with it.