Hex #559b26 or rgb(85,155,38) in RGB space is the tint of olive. It has hue angle of 95.90 degrees, value = 61 and saturation = 75. #559b26 can be obtained by mixing 4 colors: 3 drops of yellow, 2 drops of blue, 3 drops of green, 1 drop of black.
Nearest safe hex - #669933. Below you can see the block with #559b26 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #559b26 to the mixer and play with it.