Hex #627d4f or rgb(98,125,79) in RGB space is the tint of olive. It has hue angle of 95.22 degrees, value = 49 and saturation = 37. #627d4f can be obtained by mixing 4 colors: 3 drops of red, 3 drops of blue, 5 drops of green, 2 drops of white.
Nearest safe hex - #666666. Below you can see the block with #627d4f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #627d4f to the mixer and play with it.