Hex #00b299 or rgb(0,178,153) in RGB space is the tint of greenish cian. It has hue angle of 171.57 degrees, value = 70 and saturation = 100. #00b299 can be obtained by mixing 3 colors: 3 drops of cyan, 1 drop of green, 1 drop of black.
Nearest safe hex - #009999. Below you can see the block with #00b299 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #00b299 to the mixer and play with it.