What is a Secondary Triads/Are Blue, Red and Yellow Secondary Triads (In arts)

In the RYB (or subtractive) color model, the primary colors are red, yellow and blue. The three secondary colors are (green, orange and purple) are created by mixing two primary colors.

I hope this answers your question I’m not entirely sure this is what you were asking

It is true but it depends on camera, computer, programs, all that stuff