Hex #628827 or rgb(98,136,39) in RGB space is the tint of olive. It has hue angle of 83.51 degrees, value = 53 and saturation = 71. #628827 can be obtained by mixing 4 colors: 3 drops of yellow, 3 drops of green, 2 drops of white, 5 drops of black.
Nearest safe hex - #669933. Below you can see the block with #628827 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #628827 to the mixer and play with it.