In named mode, each colour choice will have a colour name associated with it. If you are a user who is visually impaired or colour blind you can attempt to guess the right colour based on its name.
RGB defines how much red, green or blue is displayed in a colour value somewhere between 0, which is no representation of the colour, and 255, the highest possible concentration of the colour. So, in the example rgb(255, 0, 0), we’d get a very bright red. If we wanted all green, our RGB values would be (0, 255, 0). For a simple blue, it would be rgb(0, 0, 255). When you mix the values you get colours such as purple(128, 0, 128). While rgb(0, 0, 0) represents black and rgb(255, 255, 255) represents white.
RGB defines how much red, green or blue is displayed in a colour value somewhere between 0, which is no representation of the colour, and 255, the highest possible concentration of the colour. So, in the example rgb(255, 0, 0), we’d get a very bright red. If we wanted all green, our RGB values would be (0, 255, 0). For a simple blue, it would be rgb(0, 0, 255). When you mix the values you get colours such as purple(128, 0, 128). While rgb(0, 0, 0) represents black and rgb(255, 255, 255) represents white.
HSL takes three values: Hue is a degree on the color wheel; 0 (or 360) is red, 120 is green, 240 is blue. Equidistant between those are yellow, cyan and magenta, at 60, 180 and 300 degrees respectively. Numbers in between reflect different shades. Saturation is a percentage value; 100% is the full colour. Lightness is also a percentage; 0% is dark (black), 100% is light (white), and 50% is the average.
Hexadecimal numbers start with a pound sign (or hashtag), and are followed by six letters or numbers. The characters range from 0-9 and A-F. The first two digits refer to red, the next two to green, and the last two to blue. We define how much red, green, and blue are in a colour with values between 00 and FF. The least amount of a colour is represented by 00 and the maximum amount of the colour by FF. A colour that’s maximum red, no green, and no blue would be #FF0000. Black would be #000000 while white would be #FFFFFF.