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There are 6 colour sliders you may use to choose a desired colour and there are 4 colour pots you may store your chosen colours in. The current pot has a white outline. (here it is the left pot). As you alter the sliders you will see the colour in the selected pot change to reflect your choice.
The sliders are best considered in two groups of three. HSL & RGB.
The first three sliders (1,2, & 3) allow you to specify a colour using the HSL Hue, Saturation and Luminance system. As an artist you will probably prefer to use these sliders as they are easy and intuitive to use.
HSL Sliders
1. Hue. This represents the colour. You always need a colour because you can fine tune the characteristics of the colour or even remove the colour using the Saturation and Luminance controls.
2. Saturation. This is equivalent to the quantity of colour. At the left side of the sliders range this represents no colour at all. It is like white paint base with no colour added. At the right side of the sliders range it is like 100% colour and no white components. The main effect of this slider is to take the colour out without altering the hue or the luminance. If you remove all saturation from a piucture you will be left with a black-gray-white picture.
3. Luminance. This determines how dark (left) or light (Right) the colour is.
Examples:
To make a dark red, select a red hue (Slider 1), Set the Saturation (Slider 2) to 100% and the Luminance (Slider 3) to 30%.
To make a medium red, select a red hue (Slider 1), Set the Saturation (Slider 2) to 100% and the Luminance (Slider 3) to 50%.
To make a light red (pink), select a red hue (Slider 1), Set the Saturation .(Slider 2) to 100% and the Luminance (Slider 3) to 80%.
RGB Sliders
The second set of sliders allows you to specify a colour using the technical RGB Red, Green & Blue colour system. Using these sliders you control how much Red light, Green light and Blue light get mixed together to make the desired colour. For example, every colour on your screen is defined in terms of RGB colour components.
RGB is not the easiest way for an artist to think in. In fact the computer will translate the HSL colours internally into RGB colours. When using these RGB Sliders remember that light gets mixed in a different way to paints so that you need to keep this in mind.
4. Red. 0% light means no light. 100% means full power light
5. Green. 0% light means no light. 100% means full power light
6. Blue. 0% light means no light. 100% means full power light
Example: to make pure yellow set Red to 100%, green to 100% and blue to 0%
If you wish to make a darker shade of yellow you will need to alter both red and green by exactly the same amount. If you alter one more than the other the hue will shift. If your colour is a mix of all three colours you will need to be very careful when setting the sliders to get different shades of your colours without the hue being altered. To do this it is much easier to use the HSL sliders.
Once a colour has been chosen using HSL you can make very fine adjustments to the colour by using the RGB sliders.
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