Hex #15986b or rgb(21,152,107) in RGB space is the tint of greenish cian. It has hue angle of 159.39 degrees, value = 60 and saturation = 86. #15986b can be obtained by mixing 4 colors: 1 drop of red, 3 drops of blue, 3 drops of cyan, 5 drops of green.
Nearest safe hex - #009966. Below you can see the block with #15986b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #15986b to the mixer and play with it.