Hex #240a18 or rgb(36,10,24) in RGB space is the tint of scarlet. It has hue angle of 327.69 degrees, value = 14 and saturation = 72. #240a18 can be obtained by mixing 3 colors: 1 drop of red, 1 drop of blue, 5 drops of black.
Nearest safe hex - #330000. Below you can see the block with #240a18 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #240a18 to the mixer and play with it.