Can you look at a non-primary colour and just 'know' what colours it is made of?

[AncientStudent]

Or do you have to work it out?

For example I can't look at purple and 'know' it's made of red and blue. I have to work it out by a process of deduction like a maths problem.

The range of greens from glaucous blueish through to yellowish seems obvious to any gardener.

I'm a gardener! They seem obvious as shades of green, yes. Green itself as a mixture of blue and yellow is not obvious to me. Even looking at the colour theory charts - orange makes sense, purple makes sense. Green looks like witchcraft

I feel like this is literally one of the first things I was taught at school and its backed up with endless putting it in to practice over the school years.

I started school in 83 before anyone asks.

I only know from doing painting at school.

My "missing" knowledge is volume related. Say I cook a dish in a pan- I have no clue what size Tupperware it will fit into. Always wildly overestimate the volume of Tupperware needed.

I am an excellent speller and can just 'see' the word in my head. I genuinely feel colour dyslexic.

Yes. Easily.

Yes, I know - but not sure it's innate, because I did art up to GCSE, come from a family of artists, and paint a lot. So it may just be that I have a lot of practice.

I'm the same as you OP. In fact I'd never even considered this was something I was supposed to be able to do until you mentioned it. I have no idea what colours make what colours.....

Yes. But my mum was an artist and had me doing colour wheels when I was a nipper.

I think I am colour dyslexic also. I could not pre-plan a colour and then mix the paint for it. No way.

I can, however, just know very big number calculations. So ask me to divide any number by anything and i just 'know' it. Although I am not dividing it mentally it just appears to my inner mind's eye visually.