Hex #40b1b9 or rgb(64,177,185) in RGB space is the tint of cyan. It has hue angle of 183.97 degrees, value = 73 and saturation = 65. #40b1b9 can be obtained by mixing 4 colors: 4 drops of blue, 3 drops of cyan, 2 drops of green, 3 drops of white.
Nearest safe hex - #3399cc. Below you can see the block with #40b1b9 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40b1b9 to the mixer and play with it.