Hex #554b47 or rgb(85,75,71) in RGB space is the tint of orange red. It has hue angle of 17.14 degrees, value = 33 and saturation = 16. #554b47 can be obtained by mixing 3 colors: 4 drops of red, 5 drops of blue, 3 drops of green.
Nearest safe hex - #663333. Below you can see the block with #554b47 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #554b47 to the mixer and play with it.