Hex #40c8b1 or rgb(64,200,177) in RGB space is the tint of greenish cian. It has hue angle of 169.85 degrees, value = 78 and saturation = 68. #40c8b1 can be obtained by mixing 4 colors: 2 drops of blue, 4 drops of cyan, 3 drops of green, 3 drops of white.
Nearest safe hex - #33cc99. Below you can see the block with #40c8b1 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40c8b1 to the mixer and play with it.