Hex #40b1c0 or rgb(64,177,192) in RGB space is the tint of cyan. It has hue angle of 187.03 degrees, value = 75 and saturation = 67. #40b1c0 can be obtained by mixing 4 colors: 1 drop of yellow, 3 drops of blue, 3 drops of cyan, 1 drop of white.
Nearest safe hex - #3399cc. Below you can see the block with #40b1c0 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40b1c0 to the mixer and play with it.