Colours

There are two main types of colour choices when it comes to Photoshop. The first and most common is RGB. These 3 letters stand for Red, Green and Blue. These are standard colours and can be found in the right hand bar of the screen. Each of these colours have a slider between 0 and 255. The second is hexadecimal colours. These use a number and letter system to give each colour a code. RGB colour and Hexadecimal colour link together. Red, Green and Blue are all classed as light sources. The lowest value that can be given to one of the light sources is 0 (hex 00). The highest value is 255 (hex FF). A Hexadecimal value is written as 3 double digit numbers, starting with a # sign. The combination of Red, Green and Blue values from 0 to 255 gives a total of more than 16 million different colours to play with (256 x 256 x 256) however modern monitors are capable of displaying at around 16384 different colours. To achieve the various colours you change the number of the RGB. Photoshop is helpful and gives you a hexadecimal equivalent based on this but also works in the opposite way. If you know the hexadecimal value it will provide you with the number of RGB particles. For every hexadecimal figure there is a plain English equivalent. This can be seen in the chart.

http://en.wikipedia.org/wiki/Hex_color#Hex_triplet – Accessed 13/02/14

http://www.mathsisfun.com/hexadecimal-decimal-colors.html - Accessed 13/02/14