Hex #40c49f or rgb(64,196,159) in RGB space is the tint of greenish cian. It has hue angle of 163.18 degrees, value = 77 and saturation = 67. #40c49f can be obtained by mixing 4 colors: 1 drop of red, 4 drops of cyan, 2 drops of green, 1 drop of white.
Nearest safe hex - #33cc99. Below you can see the block with #40c49f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40c49f to the mixer and play with it.