Hex #30a780 or rgb(48,167,128) in RGB space is the tint of greenish cian. It has hue angle of 160.34 degrees, value = 65 and saturation = 71. #30a780 can be obtained by mixing 4 colors: 5 drops of cyan, 4 drops of green, 3 drops of white, 4 drops of black.
Nearest safe hex - #339999. Below you can see the block with #30a780 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #30a780 to the mixer and play with it.