Hex #40b7b9 or rgb(64,183,185) in RGB space is the tint of cyan. It has hue angle of 180.99 degrees, value = 73 and saturation = 65. #40b7b9 can be obtained by mixing 4 colors: 2 drops of yellow, 4 drops of blue, 5 drops of cyan, 1 drop of white.
Nearest safe hex - #33cccc. Below you can see the block with #40b7b9 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40b7b9 to the mixer and play with it.