Hex #009c90 or rgb(0,156,144) in RGB space is the tint of cyan. It has hue angle of 175.38 degrees, value = 61 and saturation = 100. #009c90 can be obtained by mixing 3 colors: 5 drops of blue, 4 drops of cyan, 4 drops of green.
Nearest safe hex - #009999. Below you can see the block with #009c90 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #009c90 to the mixer and play with it.