Hex #4d8391 or rgb(77,131,145) in RGB space is the tint of bluish cian. It has hue angle of 192.35 degrees, value = 57 and saturation = 47. #4d8391 can be obtained by mixing 4 colors: 1 drop of blue, 2 drops of cyan, 3 drops of white, 4 drops of black.
Nearest safe hex - #669999. Below you can see the block with #4d8391 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4d8391 to the mixer and play with it.