Thunderbird vs Agreeable Gray
Thunderbird is a PPG color while Agreeable Gray comes from Sherwin-Williams. These are both greige-greys, so the question isn't which hue to choose — it's where within greige-grey to land. At LRV 60 vs 21, Agreeable Gray will read as the brighter of the two — a 39-point gap that matters most in north-facing or low-light rooms. At ΔE 29.8, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 9 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Thunderbird vs Agreeable Gray in Real Spaces
9 real rooms side by side. Seeing Thunderbird and Agreeable Gray 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
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. Agreeable Gray returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The LRV gap is large enough that Agreeable Gray will make the room feel meaningfully brighter than Thunderbird would.
Kitchen
Kitchen lighting tends to be bright and directional, which sharpens contrast and makes undertone differences more apparent. The LRV gap is large enough that Agreeable Gray will make the room feel meaningfully brighter than Thunderbird would.
Dining Room
Dining room light is typically the warmest in the house, which shifts both colors toward the red end of the spectrum compared to daylight. Agreeable Gray reflects noticeably more light off the walls, making the space read more open than Thunderbird.
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 Agreeable Gray will make the room feel meaningfully brighter than Thunderbird would.
Home Office
In a home office, wall color sits in your peripheral vision for hours at a time, so temperature and undertone matter more than you might expect. The LRV gap is large enough that Agreeable Gray will make the room feel meaningfully brighter than Thunderbird would.
Mudroom
A mudroom color needs to hold up under the most casual scrutiny: a glance as you're coming and going, often in mixed or artificial light. Agreeable Gray reflects noticeably more light off the walls, making the space read more open than Thunderbird.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The LRV gap is large enough that Agreeable Gray will make the room feel meaningfully brighter than Thunderbird would.
Front Door
Front doors are seen in isolation against the rest of the facade, which makes them a high-stakes surface where even subtle differences matter. Agreeable Gray returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Thunderbird vs Agreeable Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Thunderbird on one side and Agreeable Gray 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 Thunderbird comparisons
See how Thunderbird stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 21, White Dove is decisively the brighter choice.
Ammonite reflects far more light (LRV 69 vs 21), opening up a space where Thunderbird encloses it.
At LRV 21 vs 6, Thunderbird is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 21), opening up a space where Thunderbird encloses it.
Evergreen Fog reads slightly lighter (LRV 30 vs 21), a gap that shows most in low-lit rooms.
At LRV 52 vs 21, Mizzle is decisively the brighter choice.
At LRV 58 vs 21, Accessible Beige is decisively the brighter choice.
A 6-point LRV gap (27 vs 21) makes Denim Drift the marginally brighter of the two.
French Gray reflects far more light (LRV 43 vs 21), opening up a space where Thunderbird encloses it.
Thunderbird reflects far more light (LRV 21 vs 4), opening up a space where Naval encloses it.
At LRV 55 vs 21, Tranquil Dawn is decisively the brighter choice.
A 8-point LRV gap (21 vs 13) makes Thunderbird the marginally brighter of the two.
At LRV 44 vs 21, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 21), opening up a space where Thunderbird encloses it.
With LRVs of 21 and 21, the two reflect almost the same amount of light.
At LRV 66 vs 21, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 21, Shoji White is decisively the brighter choice.
At LRV 83 vs 21, Snowbound is decisively the brighter choice.
A 9-point LRV gap (21 vs 12) makes Thunderbird the marginally brighter of the two.
At LRV 68 vs 21, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 21), opening up a space where Thunderbird encloses it.
Calamine reflects far more light (LRV 68 vs 21), opening up a space where Thunderbird encloses it.
Treron reads slightly lighter (LRV 25 vs 21), a gap that shows most in low-lit rooms.
A 9-point LRV gap (21 vs 12) makes Thunderbird the marginally brighter of the two.
At LRV 45 vs 21, Saybrook Sage is decisively the brighter choice.
Pale Green reads slightly lighter (LRV 31 vs 21), a gap that shows most in low-lit rooms.
Thunderbird reflects far more light (LRV 21 vs 7), opening up a space where Pine Needle encloses it.
Cement grey reads slightly lighter (LRV 24 vs 21), a gap that shows most in low-lit rooms.
Guilford Green reflects far more light (LRV 57 vs 21), opening up a space where Thunderbird encloses it.
Just Walnut reflects far more light (LRV 72 vs 21), opening up a space where Thunderbird encloses it.