Pick colors in this order: start with what you cannot change, assess the light in each room, use light reflectance value to judge brightness, then test large samples on the actual wall before committing to anything.
Most color regret comes from doing that backwards. A chip in a store is lit by commercial lighting and sits against a white display card. Your wall is lit by whatever your windows and bulbs supply, and it sits next to your flooring, your trim and your furniture. Those are completely different conditions, which is why a color that looked perfect at the paint counter can look green, cold or muddy once it is up. Below is a process that works, plus what older homes in this region change about it.
Start With What You Cannot Change
Paint is the cheapest thing in the room to change, so it should adapt to everything else rather than the other way around.
| Fixed element | What to note |
|---|---|
| Flooring | Wood species and stain tone, tile color, carpet undertone |
| Countertops | Base color and the veining or fleck colors |
| Cabinets | Stain or paint color, and whether they are staying |
| Tile and backsplash | Undertone, which is often greener or pinker than it appears |
| Brick and stone | Almost always warm, often orange or red |
| Stained woodwork | Warm, and usually the strongest voice in the room |
| Large furniture staying in place | Sofas, rugs, built-ins |
Photograph each of these in daylight and keep the photos with you. The goal is not to match them. It is to avoid fighting them.
Learn to See Undertone
Undertone is what a neutral leans toward underneath its main color, and it is the single most useful concept in color selection.
Grays lean blue, green or purple. Whites lean warm or cool. Beiges and greiges lean yellow, pink or green. Two colors that look identical on a chip can behave completely differently on a wall because their undertones differ.
The easiest way to see it is by comparison. Hold the color against a sheet of plain white printer paper or a true white card. Alone, a gray looks gray. Next to true white, its lean becomes obvious. Do the same against your flooring and trim, because that is the comparison the room will actually make every day.
Undertone clash is the most common cause of a color that “just looks off” without anyone being able to say why. A cool gray next to warm oak trim will read blue and the trim will read orange, and both will look worse than either does alone.
Light Reflectance Value Gives You an Actual Number
Color selection feels subjective, and one part of it is not.
Light reflectance value, usually written as LRV, measures how much light a color reflects on a scale from 0 to 100. Zero is theoretical absolute black and 100 is theoretical pure white, and no real paint reaches either end. Interior colors run from roughly 3 for the deepest near-blacks to about 92 for the brightest whites. Anything above 50 reflects more light than it absorbs.
LRV is measured with a spectrophotometer and published by the major manufacturers. Sherwin-Williams lists it in the full details for each color on its website, and it appears on technical data sheets and the back of fan deck chips across brands.
| LRV range | How it behaves |
|---|---|
| 80 to 92 | Bright whites, ceilings, trim |
| 70 to 82 | Off-whites and pale neutrals, good in dim rooms |
| 55 to 70 | Greige and light grays, the safe neutral zone |
| 35 to 55 | Visible mid-tone color that still keeps a room open |
| 20 to 35 | Saturated, intentional, cozier |
| Below 20 | Deep and dramatic, needs layered lighting |
The rule that makes LRV genuinely useful is this: LRV measures lightness, not hue. Two colors can share an identical LRV and look nothing alike, because one leans green and the other leans pink. So choose your LRV first for how bright you want the room, then evaluate undertone separately.
As a starting point, a room with average natural light is usually flattered by wall colors somewhere in the 55 to 75 range. Rooms with little natural light do better above 70. A room flooded with sun can carry something well below 50 without feeling closed in.
Room Orientation Changes the Answer
The direction a room faces changes the light it receives all day, and Sherwin-Williams addresses this directly in its own guidance.
| Orientation | Light quality | What tends to work |
|---|---|---|
| North | Least light, cool and diffused all day | Warm neutrals and warm undertones, higher LRV |
| South | Strong, warm, changes through the day | Almost anything, including deeper colors |
| East | Warm in the morning, cooler by afternoon | Warm to neutral, tested in the afternoon |
| West | Cool morning, strong warm evening light | Neutral to cool, tested in the evening |
| Interior rooms with no windows | Entirely artificial | High LRV, chosen under the actual bulbs |
North-facing rooms are the ones people struggle with, and the manufacturer guidance is specific: avoid colors with cool undertones there, because cool tones will make an already cool room feel colder. Choose a warm neutral or a color with warm undertones to balance the light. Even when going bold and dark in a north room, pick a color with warm undertones.
Artificial Light Is Half the Answer
Most rooms get used after dark, and the bulbs change the color as much as the windows do.
Warm bulbs around 2700K make deeper colors feel cozier and can push whites toward yellow. Cooler bulbs at 4000K and above raise apparent brightness and make whites read crisper, sometimes clinically so.
Sherwin-Williams offers a useful shortcut for rooms where artificial light dominates: if you have chosen warm lighting, select colors as though for a south-facing room. If your lighting is white or cool toned, select as though for a north-facing room.
Two practical habits follow. Check that the bulbs are consistent through the spaces that see each other, because mismatched color temperature across an open plan will make one wall look different from the next even in the same paint. And always look at your samples at night, under the lamps you actually use, not only in daylight.
How to Sample Properly
This step prevents more regret than every other step combined, and almost nobody does it correctly.
- Buy sample pots, not chips. A two inch chip cannot tell you how a color behaves across a wall.
- Paint white poster board rather than the wall directly. The existing wall color bleeds into your perception of the new one. Board removes that.
- Apply two coats and let them dry fully. One thin coat is a different color.
- Make the samples large. At least a foot square, ideally larger.
- Move them around the room. Next to the trim, next to the flooring, on the darkest wall and the brightest one.
- Look at them at three times of day, including after dark under your own lamps.
- Do not judge a color against a bright white wall. Everything looks dark and muddy next to fresh white. Set the board against your actual trim instead.
Live with the samples for a few days before deciding. Anderson Pro Painting will happily hold a start date while colors are being finalized, because a color changed after the first coat costs far more than a week of waiting.
Older Homes Here Have Constraints Newer Ones Do Not
This is where the region shapes the advice.
The Pennsylvania Housing Finance Agency’s 2023 Comprehensive Housing Study put the statewide median construction year at 1964, with a quarter of occupied units built before 1940. A large share of homes across this region carry original features that a newer build does not.
Stained woodwork. Original oak, chestnut and pine trim is warm, often distinctly orange or red, and it is usually the strongest color voice in the room. Cool grays fight it. Warm neutrals, greens, and warm whites tend to sit with it comfortably. Choose the wall color while holding your sample directly against the trim, not against a white card.
Brick and stone. Fireplaces and chimney breasts are warm and permanent. They belong in the fixed elements list at the very start.
Less natural light. Older homes typically have smaller window openings than modern construction, and deeper rooms. That argues for higher LRV on the walls than the same color choice would need in a newer house.
Winter. Short days and gray skies for several months mean north-facing rooms here are genuinely dim for a large part of the year. Sample in the season you are in, and if you are choosing in July for a north room, be more generous with LRV than the summer light suggests you need.
These patterns show up in homes across the six counties we serve in Central Pennsylvania, and they are the reason a color that works beautifully in a new build in a nearby development can look wrong in a 1940s home two streets away.
Build a Palette, Not a Room
Choosing color room by room produces a house that feels disjointed at the doorways.
Start with your sightlines. Stand in each doorway and note which rooms you can see into. Anything visible at the same time needs to work together.
A palette that holds up usually looks like this: one main wall neutral used through the connected spaces, a second slightly deeper or lighter neutral for contrast where you want it, one trim white used everywhere, and saturated color reserved for rooms that close off. Powder rooms, dining rooms, offices and bedrooms are where a bold choice carries no risk to the rest of the house.
On trim, pick the white against your wall color rather than in isolation. A warm white next to a cool gray wall will look yellow, and a stark white next to a warm beige will look blue. If you have existing stained woodwork staying in place, choose any painted trim white to sit with the wood rather than against it. Looking at completed rooms rather than chips helps here, which is part of why we keep project case studies with finished work rather than only swatches.
If You Are Selling
Different goal, different rules.
For resale, the aim is for the largest number of buyers to picture their own things in the space, which means light warm neutrals through the main areas, a consistent trim white, and no bold accents in rooms with open sightlines. Save personality for a single closed room if you want any at all.
This is one of the few situations where the safe answer is the right answer, and it does measurably affect how a house presents, which we cover in does repainting your house increase home value.
The Mistakes That Cause Most Regret
- Choosing in the store. Commercial lighting is nothing like your living room.
- Sampling too small, or on a chip rather than a painted board.
- Ignoring the flooring, which is the largest fixed surface in most rooms.
- Cool gray in a north-facing room, which amplifies the blue cast rather than balancing it.
- Never looking at it after dark, in a room used mostly at night.
- Too many colors, which makes a house feel smaller and choppier.
- Matching a color to a screen or a photograph, neither of which is accurate.
Our post on the most regretted paint colors covers what people wish they had done differently after the fact.
Get the Colors Onto the Estimate
Once you have decided, write it down properly. A color name alone is not enough, because names repeat across brands and lines.
Record the manufacturer, the color name and code, the product line, and the sheen, listed per room and per surface. Walls, trim, ceilings and doors should each have their own line. That record is what makes touch-up possible years later, and it prevents the wrong sheen showing up on the trim. Any residential painting estimate should carry all four fields rather than a color name in the notes.
Final Thoughts
Color selection has more structure to it than most people expect. Work outward from the things you cannot change, use LRV to decide how bright a color should be, use undertone to decide which direction it leans, and let the room’s light make the final call.
The one step worth insisting on is proper sampling. Large boards, two coats, moved around the room, looked at in daylight and after dark, held against your trim rather than against white. That single habit prevents most of the repainting that follows a bad choice.
For help narrowing a palette and an estimate that lists color code, product line and sheen by room, request a free estimate from a painting company in Central Pennsylvania and you will hear back from a real person no later than the next business day.
