Hex #899a6f or rgb(137,154,111) in RGB space is the tint of olive. It has hue angle of 83.72 degrees, value = 60 and saturation = 28. #899a6f can be obtained by mixing 4 colors: 4 drops of yellow, 4 drops of blue, 3 drops of white, 2 drops of black.
Nearest safe hex - #999966. Below you can see the block with #899a6f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #899a6f to the mixer and play with it.