Hex #407b80 or rgb(64,123,128) in RGB space is the tint of cyan. It has hue angle of 184.69 degrees, value = 50 and saturation = 50. #407b80 can be obtained by mixing 3 colors: 1 drop of cyan, 1 drop of white, 2 drops of black.
Nearest safe hex - #336699. Below you can see the block with #407b80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #407b80 to the mixer and play with it.