We can mix red, yellow, and blue to create almost any colour we need. Add white to produce a lighter tone, and black for a darker tone. Be gentle to add black paint, as even the tiniest amount will change the colour quite dramatically.
Let’s practice mixing these colours.
A: Red and Yellow
B: Yellow and Blue
C: Blue and Red
Correct answer: A: Orange B: Green C: Blue
There are 7 colours to a rainbow, which goes back to the famous scientist, Isaac Newton. He in turn derived his ideas from the Ancient Greeks who defined 5 prime colours as red, yellow, green, blue and purple. The missing colours, orange and indigo were added to this set by Newton. Orange is derived from the combination of yellow and red.
Can you think of how Isaac Newton derived the last colour indigo?
If we take three light gels, red, yellow and blue, and combine them, the result is indigo. Therefore, indigo is created by combining all three prime colours. When indigo appears on a page it looks like black, but if you add a drop to some white paint, see how it turns a blue/purple. Interestingly, many are unaware of this fact.