Hex #609b9f or rgb(96,155,159) in RGB space is the tint of cyan. It has hue angle of 183.81 degrees, value = 62 and saturation = 40. #609b9f can be obtained by mixing 3 colors: 2 drops of cyan, 3 drops of white, 3 drops of black.
Nearest safe hex - #669999. Below you can see the block with #609b9f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #609b9f to the mixer and play with it.