Choosing the color for a deck for your house involves a combination of aesthetic preference, architectural style, and practical considerations. Here are some factors to consider when deciding whether your deck should be darker or lighter than your house:

1. Visual Appeal and Contrast – A deck color that contrasts with your house can create an appealing visual effect. A darker deck can provide a grounding effect, making a lighter-colored house pop, while a lighter deck can brighten the overall look of a darker home.
2. Size Perception – Darker colors tend to make spaces appear smaller, whereas lighter colors can make spaces seem larger. If you want your deck to appear more expansive, you might opt for a lighter color.
3. Heat Absorption – Darker colors absorb more heat, making the deck uncomfortably hot to walk on in direct sunlight. A lighter color might be more practical if your deck is in a sunny area.
4. Consistency with House Style – Consider the architectural style of your house. A modern home might look best with a bold contrast, while a traditional home might benefit from a more harmonious color palette.
5. Maintenance and Upkeep – Darker decks may show dust and pollen less than lighter decks but can show water spots and fade more over time. Consider the maintenance requirements and how the color might change with weathering.
6. Personal Preference – Ultimately, your personal preference and the aesthetic you wish to achieve for your outdoor living space are crucial. You might prefer a seamless look with colors closely matching your home or a striking contrast that makes your deck stand out.

There isn’t a one-size-fits-all answer, as the best choice depends on the specific characteristics of your house, the climate, and your personal taste. Some homeowners prefer to consult with a design professional to make a decision that complements their home’s exterior and landscape.