Colour code in html

Question

We know that with the help of colour coding ee can easily program to fill the components svG with intresting colour?why we use only 3 or 6 combination of sets?what we have to do if we need more sets of colour combination?if the editing is more easy in css than why we study HTML

Answer 1

Combine colour:::

RED+GREEN
=#FF0000+
#00FF00
=#FFFF00

Result is yellow