Example of hex color is a line of text that starts with a "#" sign and contains hexadecimal numbers denoting the color in the sequence red->green->blue.

Here is some examples of hex colours:
- black color (#000000)
- white color (#000000)
- red color (#ff0000)
- green color (#00ff00)
- blue color (#0000ff)

By using various combinations you can get many complex colors. It is also worth noting that sometimes you may come across another pair of numbers that denotes the alpha channel.
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