Hex #408d87 or rgb(64,141,135) in RGB space is the tint of cyan. It has hue angle of 175.32 degrees, value = 55 and saturation = 55. #408d87 can be obtained by mixing 4 colors: 3 drops of red, 2 drops of blue, 5 drops of cyan, 2 drops of green.
Nearest safe hex - #339999. Below you can see the block with #408d87 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #408d87 to the mixer and play with it.