Title: 5.5. The Colour Wheel
Course: EN_Colour theory > Section: 5. Colour systems

What we can summarise so far
The colour wheel

There is no such thing as "the colour wheel", but over the course of time different ones have been used for different applications. They are similar in the essential concepts.

A basic colour wheel contains the 12 standard colours used to create colour schemes. Each slice of the pie represents a family of colours that can be achieved with different saturations, hues, tints, shades, and mixes of neighbouring colours. The colour combinations (e.g., yellow-orange, red-orange) result from mixing equal amounts of the base hues (yellow and orange, or red and orange).

Red, yellow, and blue are the primary colours. Violet, orange, and green are the secondary colours. Everything else is a tertiary colour, a mix of primary and secondary colours.

 The colour wheel is used to select the colour schemes, which come in four variants.

The 4 kinds of color schemes

- monochrome
- complementary
- analogous
- triadic

See different models here:
https://commons.wikimedia.org/wiki/Category:Colorwheels

Based on the RGB-Colour scheme were developed the HSL and HSV colour models, schemes to apply for web applications. They are often used in colour selection tools. (see chapter 7)

Task:

- Read about HSV and HSL.
- Explain, for they stand.
- Why and when the models were created?

https://en.wikipedia.org/wiki/HSL_and_HSV