Hex #447d55 or rgb(68,125,85) in RGB space is the tint of bluish green. It has hue angle of 137.89 degrees, value = 49 and saturation = 46. #447d55 can be obtained by mixing 4 colors: 4 drops of yellow, 3 drops of blue, 3 drops of cyan, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #447d55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #447d55 to the mixer and play with it.