Use 'intermingle' to describe physical things mixing, like ingredients in a recipe. The colors in the painting intermingle beautifully.
Pro Tip 2/3
Ideas Combine
'Intermingle' also works for intangible things, like concepts or theories blending together. Different philosophies intermingle in his approach to politics.
Pro Tip 3/3
No Dominance
When things intermingle, none of the elements completely overshadow the others. In the melting pot of the city, diverse traditions intermingle.