Hex #55829c or rgb(85,130,156) in RGB space is the tint of bluish cian. It has hue angle of 201.97 degrees, value = 61 and saturation = 46. #55829c can be obtained by mixing 3 colors: 2 drops of red, 1 drop of blue, 3 drops of cyan.
Nearest safe hex - #669999. Below you can see the block with #55829c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55829c to the mixer and play with it.