Perfect Periwinkle vs Thames Fog
Where Perfect Periwinkle belongs to Sherwin-Williams's range, Thames Fog is a Valspar color. Hue-wise, Perfect Periwinkle belongs to the blue family and Thames Fog to the grey family. Thames Fog (LRV 27) reflects noticeably more light than Perfect Periwinkle (LRV 23), a difference of 4 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 33.1, 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
Perfect Periwinkle vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see Perfect Periwinkle on one side and Thames Fog 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 Perfect Periwinkle comparisons
See how Perfect Periwinkle stacks up against other well-photographed colors across different brands and tones.
