Hex #669544 or rgb(102,149,68) in RGB space is the tint of olive. It has hue angle of 94.81 degrees, value = 58 and saturation = 54. #669544 can be obtained by mixing 4 colors: 2 drops of red, 1 drop of blue, 5 drops of green, 2 drops of white.
Nearest safe hex - #669933. Below you can see the block with #669544 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #669544 to the mixer and play with it.