How to Choose Interior Paint Colors

Paint color is simultaneously the most accessible and most anxiety-inducing finish decision homeowners face. A gallon of paint costs $50, but the wrong color on four walls of a room can make it feel cold, small, dingy, or discordant with the furnishings and finishes it's supposed to complement.

At Emerald & Oak, paint selection is a carefully sequenced step in our design process — never chosen in isolation. We evaluate paint colors in the context of the room's lighting conditions (north, south, east, west), fixed materials (flooring, countertops, tile), and the furnishings that will occupy the space. The result is color that feels inevitable rather than arbitrary.

Understanding Undertones

Every paint color has an undertone — a secondary hue that becomes visible on the wall that may not be apparent on a small chip. Whites can lean yellow, pink, green, or blue. Grays can read purple, blue, or green. Understanding undertones is the single most important skill in paint selection.

  • Test paint in the actual room, on multiple walls
  • Observe samples at different times of day
  • Compare against fixed finishes — flooring, tile, countertops
  • Use large 12"×12" samples, not small chips
  • Consider adjacent rooms and how colors transition

Designer-Approved Whites

White is the most common — and most difficult — paint color to select. We maintain a curated list of whites that perform beautifully across lighting conditions and complement the warm material palettes we favor: Benjamin Moore White Dove, Simply White, and Chantilly Lace. Sherwin-Williams Alabaster and Pure White. Farrow & Ball All White and Pointing.

Testing Paint Properly

Paint should be tested in the room where it will be used. Paint large sample boards with two coats and move them around the room, placing them beside trim, flooring and furniture. Look at them in morning, afternoon and evening light, and under the bulbs you use at night. Avoid painting small patches directly onto an existing colored wall, because the surrounding color affects how you see the sample. Narrow your choices to two or three before committing.

  • Use large sample boards.
  • Two coats on every sample.
  • Check across the day and at night.

Understanding Light Direction

Light direction influences color. North-facing rooms receive cooler, indirect light that can make colors look grayer or bluer; warmer undertones often balance them. South-facing rooms have warm, bright light that can intensify colors. East light is warm in the morning and cooler later, while west light becomes warm and golden in the afternoon. Artificial lighting also matters: bulbs with different color temperatures shift paint noticeably. Choose colors with the room's light in mind rather than relying on how they look in a store.

Choosing Sheen and Coordinating Trim

Sheen affects how color and surface read. Matte and eggshell finishes suit most walls, softening color and hiding imperfections. Satin and semi-gloss are more durable for trim, doors and cabinets. Decide whether trim will contrast with walls or match them in a different sheen for a tonal look. Ceiling color can be lighter than walls, the same color, or a tinted white to soften contrast. Keeping trim consistent across connected rooms helps a home feel cohesive.

Frequently asked questions

How many paint colors should I use in my home?
For a cohesive whole-home palette, we typically specify 3-5 complementary paint colors — a primary wall color, a trim color, a ceiling color, and 1-2 accent colors for feature walls or specific rooms. This creates visual flow while allowing individual rooms to have their own character.
How do I test paint colors before painting a room?
Paint large sample boards with two coats and view them around the room at different times of day and under your evening lighting. Place them next to trim and flooring. Narrow your choices to two or three before deciding.
Why does paint look different in north-facing rooms?
North-facing rooms receive cooler, indirect light, which can make colors look grayer or bluer. Colors with warmer undertones often feel more balanced. Test samples in the room to see how they read throughout the day.