Hex #40c8b5 or rgb(64,200,181) in RGB space is the tint of greenish cian. It has hue angle of 171.62 degrees, value = 78 and saturation = 68. #40c8b5 can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of magenta, 5 drops of cyan, 1 drop of green.
Nearest safe hex - #33cccc. Below you can see the block with #40c8b5 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40c8b5 to the mixer and play with it.