Hex #6a8540 or rgb(106,133,64) in RGB space is the tint of olive. It has hue angle of 83.48 degrees, value = 52 and saturation = 52. #6a8540 can be obtained by mixing 4 colors: 2 drops of yellow, 2 drops of green, 3 drops of white, 5 drops of black.
Nearest safe hex - #669933. Below you can see the block with #6a8540 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #6a8540 to the mixer and play with it.