Opal Silk vs Cement grey
Where Opal Silk belongs to Behr's range, Cement grey is a RAL Classic color. Opal Silk reads as blue-green, while Cement grey reads as grey — two distinct hue families, not close cousins. Opal Silk (LRV 43) reflects noticeably more light than Cement grey (LRV 24), a difference of 19 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 21.6, 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 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Opal Silk vs Cement grey in Real Spaces
2 real rooms side by side. Seeing Opal Silk and Cement grey in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. Opal Silk reflects noticeably more light off the walls, making the space read more open than Cement grey.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The LRV gap is large enough that Opal Silk will make the room feel meaningfully brighter than Cement grey would.
Color Details
Opal Silk vs Cement grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Opal Silk on one side and Cement grey 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 Opal Silk comparisons
See how Opal Silk stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 43), opening up a space where Opal Silk encloses it.
A 8-point LRV gap (52 vs 43) makes Purbeck Stone the marginally brighter of the two.
At LRV 43 vs 30, Opal Silk is decisively the brighter choice.
At LRV 60 vs 43, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 43), opening up a space where Opal Silk encloses it.
Opal Silk reflects far more light (LRV 43 vs 27), opening up a space where Denim Drift encloses it.
Their light reflectance is nearly identical (LRV 43 vs 43), so neither reads brighter in a room.
Tranquil Dawn reads slightly lighter (LRV 55 vs 43), a gap that shows most in low-lit rooms.
With LRVs of 44 and 43, the two reflect almost the same amount of light.
At LRV 84 vs 43, Pure White is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 43), opening up a space where Opal Silk encloses it.
Shoji White reflects far more light (LRV 74 vs 43), opening up a space where Opal Silk encloses it.
Opal Silk reflects far more light (LRV 43 vs 12), opening up a space where Pewter Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 43), opening up a space where Opal Silk encloses it.
Opal Silk reflects far more light (LRV 43 vs 12), opening up a space where Vintage Vogue encloses it.
With LRVs of 45 and 43, the two reflect almost the same amount of light.
At LRV 43 vs 31, Opal Silk is decisively the brighter choice.
At LRV 43 vs 7, Opal Silk is decisively the brighter choice.
At LRV 57 vs 43, Guilford Green is decisively the brighter choice.
At LRV 72 vs 43, Just Walnut is decisively the brighter choice.