Sea Mariner vs Nocturnal Green
Where Sea Mariner belongs to Sherwin-Williams's range, Nocturnal Green is a Valspar color. Sea Mariner reads as blue-grey, while Nocturnal Green reads as blue-green — two distinct hue families, not close cousins. Sea Mariner (LRV 7) reflects noticeably more light than Nocturnal Green (LRV 3), a difference of 3 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 11.6, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Sea Mariner vs Nocturnal Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Sea Mariner on one side and Nocturnal Green 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 Sea Mariner comparisons
See how Sea Mariner stacks up against other well-photographed colors across different brands and tones.
