Hex #509760 or rgb(80,151,96) in RGB space is the tint of bluish green. It has hue angle of 133.52 degrees, value = 59 and saturation = 47. #509760 can be obtained by mixing 4 colors: 1 drop of cyan, 5 drops of green, 5 drops of white, 5 drops of black.
Nearest safe hex - #669966. Below you can see the block with #509760 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #509760 to the mixer and play with it.