Hex #306960 or rgb(48,105,96) in RGB space is the tint of greenish cian. It has hue angle of 170.53 degrees, value = 41 and saturation = 54. #306960 can be obtained by mixing 4 colors: 3 drops of magenta, 4 drops of cyan, 4 drops of green, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #306960 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #306960 to the mixer and play with it.