Did you know there are other ways to represent colors in CSS? One of these ways is called hexadecimal code, or `hex code`

for short.

We usually use `decimals`

, or base 10 numbers, which use the symbols 0 to 9 for each digit. `Hexadecimals`

(or `hex`

) are base 16 numbers. This means it uses sixteen distinct symbols. Like decimals, the symbols 0-9 represents values zero to nine. Then A,B,C,D,E,F represent values ten to fifteen. Altogether, 0 to F can represent a digit in `hexadecimal`

, giving us 16 total possible values. You can find more information about hexadecimal numbers here.

In CSS, we can use 6 hexadecimal digits to represent colors, two each for the red (R), green (G), and blue (B) components. For example, `#000000`

is black and is also the lowest possible value. You can find more information about the RGB color system here.

Replace the word `black`

in our `body`

element's background-color with its `hex code`

representation, `#000000`

.