What colours I think work and why

Obviously you can see that this is the Pepsi logo. I think that these colours work because the red is a hot colour and then the white is a boarder between that and the blue, which is a cold colour. It looks nice because the colours are spaced out where as if the white wasn't there to space them out it wouldn't look as nice as it already does. Even though the colours don't complement each other it still looks nice because they are opposites with being hot and cold.

I also think the Barcelona football strip colours work good together with the maroon and the dark blue, they are two darker colours and they both work really well together.

This logo on the other hand is a very bad logo in my opinion even though the colours are almost complimentary they are really bad together, and the logo itself just looks awful it's just a badly drawn tick with a simple text style. There are some logos and posters etc where cyan and red are good together but this is not one of them.

There are two types of colours, primary and secondary. Primary colours are red blue and yellow. Secondary colours are made from combining two primary colours together E.G. red and blue make purple.