Hex #129e74 or rgb(18,158,116) in RGB space is the tint of greenish cian. It has hue angle of 162.00 degrees, value = 62 and saturation = 89. #129e74 can be obtained by mixing 4 colors: 1 drop of yellow, 5 drops of blue, 3 drops of cyan, 5 drops of green.
Nearest safe hex - #009966. Below you can see the block with #129e74 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #129e74 to the mixer and play with it.