Hex #4d8680 or rgb(77,134,128) in RGB space is the tint of cyan. It has hue angle of 173.68 degrees, value = 53 and saturation = 43. #4d8680 can be obtained by mixing 4 colors: 3 drops of blue, 2 drops of green, 3 drops of white, 2 drops of black.
Nearest safe hex - #669999. Below you can see the block with #4d8680 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4d8680 to the mixer and play with it.