![Infographic on the chemistry of the colours of autumn leaves. Green is caused by chlorophyll, carotenoids and flavonoids give yellows, and oranges come from carotenoids, which also contribute to reds along with anthocyanins.](https://i0.wp.com/www.compoundchem.com/wp-content/uploads/2023/09/Chemistry-of-autumn-leaf-colours-2023.png?resize=1170%2C827&ssl=1)
With autumn looming on the horizon, the leaves on some trees have already begun the transition towards the vibrant hues of autumn. Whilst this change may outwardly seem like a simple one, the many vivid colours are a result of a range of chemical compounds, a selection of which are detailed here.