The DIY journal

Color theory · 3 min read

Build a palette without making every surface compete.

A dominant color, a supporting color, and a smaller accent make a useful starting point. Your home gets the final vote.

Think in proportions, not matching sets.

The familiar 60–30–10 idea is a decorating guideline: a large share of one color, a smaller supporting area, and a little accent. It is not a formula that needs to be measured with a tape.

For example, a soft wall color can carry the room, a wood-and-textile family can provide the supporting layer, and a few richer objects can supply contrast. The accent does not have to be an accent wall.

Choose the kind of relationship you want.

Nearby hues tend to create a quieter relationship. Colors from opposite areas of a hue wheel can create more visible contrast. A single hue in different lightness levels can also feel layered.

These are starting structures, not guarantees of a beautiful room. Saturation, proportion, material, and light all change the result. The color lab uses an illustrative digital hue wheel; it does not calculate a paint-mixing formula.

Let one element lead.

If the room already has a patterned rug or a striking countertop, try letting that object provide the palette. Pull a supporting color from it and test quieter wall options around it.

You do not need to repeat every color equally. Repeating a small accent in two or three places can feel connected without turning the room into a theme.

Test the transitions.

Stand where you can see adjoining rooms. A paint choice works in context, including the trim, hallway, and rooms visible through doorways. Lay your sample boards next to each other as well as in their own spaces.

Keep the palette that works in the actual house. A rule or digital preview is useful when it helps you decide; it is not a reason to ignore what your eyes are telling you.

Keep this in mindUse a simple hierarchy: one dominant color, a supporting family, and a smaller accent.
Further reading & product referencesSherwin-Williams: Understanding undertones

Editorial guide · September 2026. Follow the current label and product data for your exact coating and surface.