Understanding Hexadecimal Colour Codes (HTML Colour Codes)

Updated: Sep 6, 2022

Hexadecimal colours are known as HTML colours. Each HTML colour code contains a symbol '#' and 6 letters or numbers. This letters and numbers are Hexadecimal numbers.

The first two symbols in HTML colour codes represents the intensity of Red colour. Third and fourth symbols for the intensity of Green colour and fifth and sixth for the intensity of Blue colour.

There has 3 bytes, 1 byte per colour channel.

So, combining the intensity of Red, Green and Blue colours we can create any colour.

'00' is the lowest intensity of a colour and 'FF' is the highest intensity of a colour.

#000000 represents pure Black colour. All colour intensity is zero.

#FFFFFF represents pure White colour. All colour intensity is full.

Grayscale colour shade always has same Red, Green and Blue intensity value.

#252525, #5E5E5E, #808080, #ABABAB, #FEFEFE all are shades of gray.