Poseidon
What Poseidon Actually Looks Like
Poseidon is a deeply saturated teal green that reads like the color of a dark ocean reef. It sits squarely between blue and green, and in most lighting it leans more green than you might expect from the swatch. With an LRV of 11.3, this is a genuinely dark color, but it never feels muddy or flat. The high saturation keeps it vivid and alive, even in lower light. In bright daylight it can shift noticeably toward emerald green. Under warm incandescent bulbs it calms down and pulls slightly bluer. On a north-facing wall you will see its coolest, most oceanic side.
Poseidon Undertones
The dominant undertone is teal, a nearly equal push and pull between blue and green. Most designers land on blue-green as the primary read, but there is a real debate about whether it skews more blue or more green in practice. In artificial light and shadowed rooms, the blue comes forward and you can almost read it as a dark navy-teal hybrid. In natural daylight, especially southern exposure, the green asserts itself strongly. There is no warmth here at all. No yellow, no gray, no brown creeping in. This is a pure, cool, deep teal through and through.
Where Poseidon Works Best
Poseidon is built for impact. Use it on a front door and you will stop people on the sidewalk. It is a powerhouse on kitchen cabinets, especially lowers, where it anchors the room without making the whole space feel like a cave. On an accent wall in a living room or bedroom, it creates a rich focal point. For exteriors, it works beautifully as a body color on smaller homes, particularly historic styles like Victorians or Craftsman bungalows, where a bold color feels intentional. On larger homes, keep it to shutters and doors. Pair it with warm metals like brass and unlacquered copper to bring out its depth. It also plays surprisingly well with warm wood tones like walnut and white oak, which offset its coolness.
Where to put Poseidon
This is one of the best uses for Poseidon. A front door in this color reads as confident and welcoming without being quirky. It pairs well with warm stone, red brick, and natural wood siding. Two coats will give you full, even coverage on most door materials.
Poseidon on lower cabinets with a warm white on uppers is a combination that keeps working year after year. Brass hardware is the natural partner. Make sure your countertop has some warmth to it, whether that is butcher block, a warm-veined quartz, or soapstone. Cool gray countertops can make the whole kitchen feel chilly.
In a bedroom or living room, a single Poseidon accent wall behind a bed or sofa creates serious depth. Keep the other three walls in a light warm neutral. The LRV of 11.3 means it will absorb a lot of light, so make sure you have good layered lighting in the room.
On a smaller home, Poseidon as a full body color is bold and memorable. Pair it with crisp white trim and a warm wood or natural stain door. On larger homes, limit it to shutters, doors, or porch ceilings. In direct sunlight, expect the green side to come forward significantly.
What to Pair With Poseidon
Because Poseidon is so saturated and dark, it needs breathing room. Gossamer Veil (SW 9165) is a smart coordinating choice. It is a soft warm neutral that keeps Poseidon from feeling cold or heavy. For trim, go with a clean, warm white rather than a cool bright white, which can make the teal look almost artificial by contrast.
Poseidon vs similar colors
All comparisons are matched against Poseidon at LRV 11.3.
Colors that clash with Poseidon
With an LRV of 11.3, Poseidon absorbs a tremendous amount of light. In a windowless powder room or a north-facing hallway, it can feel like the walls are closing in.
A stark blue-white trim next to Poseidon can create an almost cartoonish contrast. The teal starts to look like it belongs in a children's room rather than a sophisticated space.
Cool grays next to Poseidon neutralize its energy. The pairing reads as cold and lifeless.
Common questions
Poseidon has an LRV of 11.3, which places it firmly in the dark range. It will absorb most of the light that hits it, so plan your lighting carefully in any room where you use it.
It depends on your light. In bright natural daylight, especially southern or western exposure, green comes forward. In dimmer conditions or under cooler artificial light, the blue side takes over. Most people read it as a balanced teal, but this is a color worth sampling in your actual room before committing.
A warm white trim gives you the best result. Avoid stark cool whites, which can make Poseidon look artificial. Gossamer Veil (SW 9165) is a coordinating option if you want a softer, warmer neutral contrast.
You can, but be strategic. At LRV 11.3 it will make a small room feel even smaller if you cover all four walls. Use it on one accent wall, a vanity, or cabinetry. Add good lighting and reflective surfaces to keep the space from feeling closed in.