Hex #ef4f40 or rgb(239,79,64) in RGB space is the tint of red. It has hue angle of 5.14 degrees, value = 94 and saturation = 73. #ef4f40 can be obtained by mixing 4 colors: 5 drops of yellow, 5 drops of red, 5 drops of magenta, 1 drop of blue.
Nearest safe hex - #ff6633. Below you can see the block with #ef4f40 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #ef4f40 to the mixer and play with it.