Cinnamon Slate vs Sea Serpent
Cinnamon Slate (Benjamin Moore) and Sea Serpent (Sherwin-Williams) come from different manufacturers. Cinnamon Slate reads as grey, while Sea Serpent reads as blue — two distinct hue families, not close cousins. The 13-point LRV gap — 20 for Cinnamon Slate vs 7 for Sea Serpent — means Cinnamon Slate will open up a space more effectively. Where Cinnamon Slate leans red, Sea Serpent reads cool — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 24.6 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 9 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cinnamon Slate vs Sea Serpent in Real Spaces
9 real rooms side by side. Seeing Cinnamon Slate and Sea Serpent in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Cinnamon Slate reflects noticeably more light off the walls, making the space read more open than Sea Serpent.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Cinnamon Slate returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Kitchen
Kitchens often have the harshest, most revealing light in the house — under-cabinet LEDs and overhead fixtures that strip away subtlety. Cinnamon Slate returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Dining Room
Dining rooms often rely on warm incandescent or candlelight, which flatters warm undertones and mutes cool ones. The LRV gap is large enough that Cinnamon Slate will make the room feel meaningfully brighter than Sea Serpent would.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Cinnamon Slate returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Home Office
Home office walls matter more than most — you're looking at them all day, and a color that reads fine at first can become tiring over time. Cinnamon Slate returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Mudroom
In a hardworking space like a mudroom, the depth and warmth of a color reads differently than in a quieter room. The LRV gap is large enough that Cinnamon Slate will make the room feel meaningfully brighter than Sea Serpent would.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. Cinnamon Slate returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Front Door
On a front door, the color is both the first and last thing you see — a context where even a modest tonal difference reads clearly. Cinnamon Slate reflects noticeably more light off the walls, making the space read more open than Sea Serpent.
Color Details
Cinnamon Slate vs Sea Serpent Simulated Comparison
5 simulated room previews — drag the slider on each to see Cinnamon Slate on one side and Sea Serpent on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More Cinnamon Slate comparisons
See how Cinnamon Slate stacks up against other well-photographed colors across different brands and tones.
