sienna

Sienna (#A0522D) is a warm, medium reddish-brown CSS named colour, referencing the natural earth pigment from Siena, Italy — one of the fundamental colours of Western painting traditions. Used since the Renaissance for warm underpainting and shadow glazing, it is one of the most useful and recognisable earth tones. In contemporary design it appears in autumn palettes, rustic interiors, and contexts that reference the warmth of natural terracotta and fired earth.

True brown is the color of earth, wood, and leather, symbolizing reliability, endurance, and honest craftsmanship. It is psychologically grounding and creates a sense of security and material substance. Brown conveys authenticity and is often used by brands that emphasize traditional values and natural materials.

Medium brown is effective for coffee brands, furniture companies, and outdoor lifestyle products. It works as a warm neutral in navigation elements, card borders, and section dividers. Brown provides an organic alternative to gray-based design systems, particularly for brands wanting to convey handmade quality.