Hex #6aab9c or rgb(106,171,156) in RGB space is the tint of greenish cian. It has hue angle of 166.15 degrees, value = 67 and saturation = 38. #6aab9c can be obtained by mixing 4 colors: 3 drops of yellow, 5 drops of blue, 2 drops of cyan, 2 drops of white.
Nearest safe hex - #669999. Below you can see the block with #6aab9c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #6aab9c to the mixer and play with it.