Hex #40baaa or rgb(64,186,170) in RGB space is the tint of greenish cian. It has hue angle of 172.13 degrees, value = 73 and saturation = 66. #40baaa can be obtained by mixing 4 colors: 1 drop of blue, 1 drop of cyan, 1 drop of green, 1 drop of white.
Nearest safe hex - #33cc99. Below you can see the block with #40baaa color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40baaa to the mixer and play with it.