Hex #1c9b7b or rgb(28,155,123) in RGB space is the tint of greenish cian. It has hue angle of 164.88 degrees, value = 61 and saturation = 82. #1c9b7b can be obtained by mixing 4 colors: 1 drop of red, 2 drops of blue, 3 drops of cyan, 3 drops of green.
Nearest safe hex - #339966. Below you can see the block with #1c9b7b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1c9b7b to the mixer and play with it.