Undine vs Agreeable Gray
Undine is a Behr color while Agreeable Gray comes from Sherwin-Williams. Undine reads as blue, while Agreeable Gray reads as greige-grey — two distinct hue families, not close cousins. At LRV 60 vs 43, Agreeable Gray will read as the brighter of the two — a 17-point gap that matters most in north-facing or low-light rooms. The tonal difference — Undine's green and blue character against Agreeable Gray's warm — becomes most visible against white trim or in morning light. At ΔE 22.8, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 6 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Undine vs Agreeable Gray in Real Spaces
6 real rooms side by side. Seeing Undine 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 Undine 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 Undine would.
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 Undine would.
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 Undine would.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The LRV gap is large enough that Agreeable Gray will make the room feel meaningfully brighter than Undine would.
Color Details
Undine vs Agreeable Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Undine 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 Undine comparisons
See how Undine stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 43, White Dove is decisively the brighter choice.
Purbeck Stone reads slightly lighter (LRV 52 vs 43), a gap that shows most in low-lit rooms.
Undine reflects far more light (LRV 43 vs 30), opening up a space where Evergreen Fog encloses it.
At LRV 58 vs 43, Accessible Beige is decisively the brighter choice.
At LRV 43 vs 27, Undine is decisively the brighter choice.
With LRVs of 43 and 43, the two reflect almost the same amount of light.
A 12-point LRV gap (55 vs 43) makes Tranquil Dawn the marginally brighter of the two.
Their light reflectance is nearly identical (LRV 44 vs 43), so neither reads brighter in a room.
Pure White reflects far more light (LRV 84 vs 43), opening up a space where Undine encloses it.
At LRV 66 vs 43, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 43, Shoji White is decisively the brighter choice.
At LRV 43 vs 12, Undine is decisively the brighter choice.
At LRV 68 vs 43, Skimming Stone is decisively the brighter choice.
At LRV 43 vs 12, Undine is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 45 vs 43), so neither reads brighter in a room.
Undine reads slightly lighter (LRV 43 vs 31), a gap that shows most in low-lit rooms.
Undine reflects far more light (LRV 43 vs 7), opening up a space where Pine Needle encloses it.
Undine reflects far more light (LRV 43 vs 24), opening up a space where Cement grey encloses it.
Guilford Green reflects far more light (LRV 57 vs 43), opening up a space where Undine encloses it.
Just Walnut reflects far more light (LRV 72 vs 43), opening up a space where Undine encloses it.