What is the 3 color rule?

The 3 colour rule is a simple design principle that many wedding planners use to keep a palette calm and cohesive. It suggests you pick three main colours and stick to them across your stationery, flowers, table linen, and signs. This does not mean every single item must be one of those three colours, but it means your main decorative elements should draw from the same trio.

A common way to apply the rule is to choose one dominant colour, one secondary colour, and one accent. The dominant colour appears most often, such as your tablecloths or chair covers. The secondary colour supports it, like your napkins or bridesmaid dresses. The accent colour is used sparingly for pops, such as in your flowers, candles, or place cards.

For example, a palette of ivory, sage green, and terracotta works well. Ivory is the base for your table linen and stationery. Sage green appears in your foliage and bridesmaid dresses. Terracotta is the accent in your napkins, ribbon, and small flower details. This trio feels balanced and intentional.

You can also use shades and tones of the same colour. A palette of navy, sky blue, and powder blue still counts as one colour family, which can feel very elegant. The rule is flexible, so do not worry about matching exact shades. What matters is that the colours relate to each other and do not fight for attention.

If you love more than three colours, you can still use them, but keep the extras to very small details. This stops the overall look from becoming busy and helps your photos feel timeless.