Hex #5b8f5b or rgb(91,143,91) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 56 and saturation = 36. #5b8f5b can be obtained by mixing 3 colors: 4 drops of green, 5 drops of white, 5 drops of black.
Nearest safe hex - #669966. Below you can see the block with #5b8f5b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5b8f5b to the mixer and play with it.