Firefly vs Cement grey
Firefly is a Behr color while Cement grey comes from RAL Classic. Hue-wise, Firefly belongs to the beige-yellow family and Cement grey to the grey family. At LRV 86 vs 24, Firefly will read as the brighter of the two — a 62-point gap that matters most in north-facing or low-light rooms. At ΔE 47.7, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Firefly vs Cement grey in Real Spaces
1 real room side by side. Seeing Firefly 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 amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The LRV gap is large enough that Firefly will make the room feel meaningfully brighter than Cement grey would.
Color Details
Firefly vs Cement grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Firefly 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 Firefly comparisons
See how Firefly stacks up against other well-photographed colors across different brands and tones.
Their light reflectance is nearly identical (LRV 86 vs 83), so neither reads brighter in a room.
Firefly reflects far more light (LRV 86 vs 52), opening up a space where Purbeck Stone encloses it.
Firefly reflects far more light (LRV 86 vs 30), opening up a space where Evergreen Fog encloses it.
Firefly reflects far more light (LRV 86 vs 60), opening up a space where Agreeable Gray encloses it.
At LRV 86 vs 58, Firefly is decisively the brighter choice.
At LRV 86 vs 27, Firefly is decisively the brighter choice.
Firefly reflects far more light (LRV 86 vs 43), opening up a space where French Gray encloses it.
At LRV 86 vs 55, Firefly is decisively the brighter choice.
At LRV 86 vs 44, Firefly is decisively the brighter choice.
With LRVs of 86 and 84, the two reflect almost the same amount of light.
At LRV 86 vs 66, Firefly is decisively the brighter choice.
A 11-point LRV gap (86 vs 74) makes Firefly the marginally brighter of the two.
At LRV 86 vs 12, Firefly is decisively the brighter choice.
At LRV 86 vs 68, Firefly is decisively the brighter choice.
At LRV 86 vs 12, Firefly is decisively the brighter choice.
At LRV 86 vs 45, Firefly is decisively the brighter choice.
Firefly reflects far more light (LRV 86 vs 31), opening up a space where Pale Green encloses it.
Firefly reflects far more light (LRV 86 vs 7), opening up a space where Pine Needle encloses it.
Firefly reflects far more light (LRV 86 vs 57), opening up a space where Guilford Green encloses it.
Firefly reflects far more light (LRV 86 vs 72), opening up a space where Just Walnut encloses it.