Anthocyanins

The reds, purples, and blues of the plant world — pigments that change color with pH like litmus.

Core Principles & Analysis

• The same molecule can read red in acid and blue in alkaline tissue.
• Hydrangea flowers shift blue on acidic, aluminium-rich soils via anthocyanin complexes.
• Autumn reds are freshly synthesized anthocyanins, not unmasked leftovers like the yellows.

Specifications & Metrics

• CHEMICAL CLASS: Flavonoid pigments