Lagoon
What Lagoon Actually Looks Like
Lagoon is a deep, saturated teal that splits the difference between blue and green without fully committing to either. Think of the color you see looking straight down into clear coastal water over a rocky bottom. It reads rich and grounded, never pastel, and it carries real visual weight on a wall. At an LRV of 20.3, it absorbs a fair amount of light, so it will darken noticeably in rooms with small windows or north-facing exposure. In strong natural light it leans slightly more green. Under warm incandescent bulbs it can shift toward a moodier, deeper blue-green. It is a true mid-depth color, dark enough to anchor a room but not so dark that it swallows detail.
Lagoon Undertones
The dominant undertone is teal, that balanced push-pull between blue and green. Most designers agree the blue side wins out slightly, especially in cooler or dimmer lighting. But the green undertone is always present, and in south-facing rooms or warm afternoon light it becomes more obvious. You will not find any warm gray or taupe hiding in this color. It is decisively cool. Some reviewers note a very faint gray cast that keeps it from reading as overly tropical or cartoonish, which is part of what makes Lagoon feel sophisticated rather than kitschy. If you are sensitive to blue undertones, test a large sample before committing, because the blue can surprise you on a full wall.
Where Lagoon Works Best
Lagoon works well as a feature color rather than a whole-house neutral. It is strong enough to serve as an accent wall in a living room or bedroom, and it makes an excellent front door or shutter color on exteriors. On cabinetry, particularly in a bathroom vanity or laundry room, it brings energy without overwhelming a small space. For exteriors, it pairs naturally with warm stone, natural wood siding, or cream-colored brick. Use it on board-and-batten or shiplap accent walls to add depth and texture at the same time. Because of its LRV of 20.3, avoid using it on all four walls in a room smaller than about 12 by 12 feet unless you have generous windows or plan to supplement with layered lighting.
Where to put Lagoon
Lagoon on a headboard wall creates a calm, cocooning effect that promotes sleep. Keep the remaining walls in a soft warm white and layer in warm bedding, like ivory linen or oatmeal-colored cotton, to prevent the room from feeling clinical. Table lamps with warm bulbs will pull out more of the green undertone in the evening, which most people find relaxing.
This color was practically made for a single accent wall. It is saturated enough to create a clear focal point without needing accessories to prop it up. In a living room, try it behind open shelving or a media wall. The depth of the color will make lighter objects on the shelves pop forward. Pair the surrounding walls with a warm white trim color like Greek Villa for clean contrast.
If your living room gets strong natural light, you can push Lagoon onto more surfaces, like a fireplace surround or built-in bookcases. It grounds a room the way a deep rug does. Mix in warm metals and natural materials to keep the space feeling inviting. Leather, jute, and terracotta all play well against this color. Avoid pairing it with too many other cool tones or the room can feel uninviting.
On a front door, Lagoon makes an immediate impression without being loud. It works on traditional, craftsman, and coastal-style homes alike. For full exterior siding, it reads as a confident, slightly unconventional choice that stands out on the street. Pair it with warm cream trim and consider a warm gray or charcoal roof to complete the palette. It holds up well in direct sun without looking washed out.
What to Pair With Lagoon
Lagoon's cool teal base loves contrast with warm, light neutrals. Greek Villa (SW 7551), one of its coordinating colors, is a creamy warm white that softens the intensity and keeps things from feeling cold. For trim, Greek Villa is a strong default. You can also pair Lagoon with warm wood tones like white oak or walnut, matte brass or unlacquered brass hardware, and natural linen textiles to balance all that cool energy.
Lagoon vs similar colors
All comparisons are matched against Lagoon at LRV 20.3.
Colors that clash with Lagoon
At LRV 20.3, Lagoon needs adequate lighting to show its color. In dim hallways or windowless powder rooms, it can read almost charcoal-teal and lose its vibrancy.
Pairing Lagoon with cool gray sofas, concrete-look tile, or blue-gray LVP can push a room into an uncomfortably cold palette where nothing feels warm.
Pure bright white trim next to Lagoon creates high contrast that can look stark and institutional rather than intentional.
Common questions
Lagoon has an LRV of 20.3, which places it in the deep range. It absorbs significantly more light than it reflects, so it will read rich and saturated on the wall. Plan for good lighting if you use it in enclosed spaces.
It is genuinely both, which is what makes it a true teal. In cooler light and north-facing rooms, the blue side tends to dominate. In warm light or south-facing rooms, you will notice more green. Most people read it as slightly more blue than green overall.
A warm, creamy white like Greek Villa (SW 7551) is a reliable choice. It softens the contrast and complements the cool undertones without competing. Avoid stark bright whites, which can make the pairing feel harsh.
Yes, but be strategic. Use it on one wall or on the vanity cabinet rather than all surfaces. At LRV 20.3 it will close in a small room quickly. Pair it with light tile, a large mirror, and good overhead lighting to keep things feeling open.
It does. Lagoon holds its saturation well in direct sunlight and reads as a confident, earthy teal rather than a bright tropical color. It works for front doors, shutters, and full siding, especially when paired with warm cream or off-white trim.