Hex #662a1a or rgb(102,42,26) in RGB space is the tint of orange red. It has hue angle of 12.63 degrees, value = 40 and saturation = 75. #662a1a can be obtained by mixing 4 colors: 4 drops of red, 1 drop of cyan, 1 drop of green, 4 drops of black.
Nearest safe hex - #663333. Below you can see the block with #662a1a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #662a1a to the mixer and play with it.