Hex #b1bb55 or rgb(177,187,85) in RGB space is the tint of yellow. It has hue angle of 65.88 degrees, value = 73 and saturation = 55. #b1bb55 can be obtained by mixing 4 colors: 4 drops of yellow, 2 drops of magenta, 4 drops of green, 3 drops of white.
Nearest safe hex - #99cc66. Below you can see the block with #b1bb55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #b1bb55 to the mixer and play with it.