Hex #4e839d or rgb(78,131,157) in RGB space is the tint of bluish cian. It has hue angle of 199.75 degrees, value = 62 and saturation = 50. #4e839d can be obtained by mixing 4 colors: 3 drops of blue, 2 drops of cyan, 4 drops of white, 4 drops of black.
Nearest safe hex - #669999. Below you can see the block with #4e839d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4e839d to the mixer and play with it.