Hex #509a7a or rgb(80,154,122) in RGB space is the tint of teal. It has hue angle of 154.05 degrees, value = 60 and saturation = 48. #509a7a can be obtained by mixing 4 colors: 4 drops of blue, 5 drops of green, 5 drops of white, 2 drops of black.
Nearest safe hex - #669966. Below you can see the block with #509a7a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #509a7a to the mixer and play with it.