Hex #40b2b5 or rgb(64,178,181) in RGB space is the tint of cyan. It has hue angle of 181.54 degrees, value = 71 and saturation = 65. #40b2b5 can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of magenta, 5 drops of cyan, 1 drop of black.
Nearest safe hex - #3399cc. Below you can see the block with #40b2b5 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40b2b5 to the mixer and play with it.