Hex #40a6aa or rgb(64,166,170) in RGB space is the tint of cyan. It has hue angle of 182.26 degrees, value = 67 and saturation = 62. #40a6aa can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of red, 2 drops of blue, 4 drops of cyan.
Nearest safe hex - #339999. Below you can see the block with #40a6aa color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40a6aa to the mixer and play with it.