Hex #126c4f or rgb(18,108,79) in RGB space is the tint of greenish cian. It has hue angle of 160.67 degrees, value = 42 and saturation = 83. #126c4f can be obtained by mixing 4 colors: 5 drops of blue, 5 drops of green, 1 drop of white, 3 drops of black.
Nearest safe hex - #006666. Below you can see the block with #126c4f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #126c4f to the mixer and play with it.