Hex #55917b or rgb(85,145,123) in RGB space is the tint of greenish cian. It has hue angle of 158.00 degrees, value = 57 and saturation = 41. #55917b can be obtained by mixing 3 colors: 3 drops of yellow, 5 drops of blue, 1 drop of cyan.
Nearest safe hex - #669966. Below you can see the block with #55917b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55917b to the mixer and play with it.