Hex #665f5e or rgb(102,95,94) in RGB space is the tint of orange red. It has hue angle of 7.50 degrees, value = 40 and saturation = 8. #665f5e can be obtained by mixing 4 colors: 1 drop of magenta, 1 drop of green, 3 drops of white, 5 drops of black.
Nearest safe hex - #666666. Below you can see the block with #665f5e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #665f5e to the mixer and play with it.