Hex #609a9f or rgb(96,154,159) in RGB space is the tint of cyan. It has hue angle of 184.76 degrees, value = 62 and saturation = 40. #609a9f can be obtained by mixing 4 colors: 1 drop of red, 5 drops of cyan, 5 drops of white, 5 drops of black.
Nearest safe hex - #669999. Below you can see the block with #609a9f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #609a9f to the mixer and play with it.