Hex #888b5b or rgb(136,139,91) in RGB space is the tint of yellow. It has hue angle of 63.75 degrees, value = 55 and saturation = 35. #888b5b can be obtained by mixing 4 colors: 3 drops of yellow, 5 drops of magenta, 2 drops of cyan, 5 drops of green.
Nearest safe hex - #999966. Below you can see the block with #888b5b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #888b5b to the mixer and play with it.