Hex #66605e or rgb(102,96,94) in RGB space is the tint of orange red. It has hue angle of 15.00 degrees, value = 40 and saturation = 8. #66605e can be obtained by mixing 4 colors: 4 drops of magenta, 1 drop of cyan, 4 drops of green, 1 drop of black.
Nearest safe hex - #666666. Below you can see the block with #66605e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66605e to the mixer and play with it.