Hex #509c75 or rgb(80,156,117) in RGB space is the tint of teal. It has hue angle of 149.21 degrees, value = 61 and saturation = 49. #509c75 can be obtained by mixing 4 colors: 5 drops of yellow, 5 drops of blue, 4 drops of cyan, 2 drops of black.
Nearest safe hex - #669966. Below you can see the block with #509c75 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #509c75 to the mixer and play with it.