Hex #40b3b5 or rgb(64,179,181) in RGB space is the tint of cyan. It has hue angle of 181.03 degrees, value = 71 and saturation = 65. #40b3b5 can be obtained by mixing 4 colors: 5 drops of blue, 4 drops of cyan, 3 drops of green, 4 drops of white.
Nearest safe hex - #33cccc. Below you can see the block with #40b3b5 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40b3b5 to the mixer and play with it.