Greenblack vs Thames Fog
Where Greenblack belongs to Sherwin-Williams's range, Thames Fog is a Valspar color. Hue-wise, Greenblack belongs to the green-grey family and Thames Fog to the grey family. Thames Fog (LRV 27) reflects noticeably more light than Greenblack (LRV 4), a difference of 23 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 36.1, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Greenblack vs Thames Fog in Real Spaces
4 real rooms side by side. Seeing Greenblack and Thames Fog 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
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The LRV gap is large enough that Thames Fog will make the room feel meaningfully brighter than Greenblack would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Thames Fog reflects noticeably more light off the walls, making the space read more open than Greenblack.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Thames Fog reflects noticeably more light off the walls, making the space read more open than Greenblack.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Thames Fog reflects noticeably more light off the walls, making the space read more open than Greenblack.
Color Details
Greenblack vs Thames Fog Simulated Comparison
5 simulated room previews — drag the slider on each to see Greenblack 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 Greenblack comparisons
See how Greenblack stacks up against other well-photographed colors across different brands and tones.
