Hex #39877b or rgb(57,135,123) in RGB space is the tint of greenish cian. It has hue angle of 170.77 degrees, value = 53 and saturation = 58. #39877b can be obtained by mixing 4 colors: 2 drops of red, 2 drops of blue, 3 drops of cyan, 2 drops of green.
Nearest safe hex - #339966. Below you can see the block with #39877b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #39877b to the mixer and play with it.