Iron grey vs Agreeable Gray
Iron grey (RAL Classic) and Agreeable Gray (Sherwin-Williams) come from different manufacturers. Hue-wise, Iron grey belongs to the blue-grey family and Agreeable Gray to the greige-grey family. The 48-point LRV gap — 60 for Agreeable Gray vs 12 for Iron grey — means Agreeable Gray will open up a space more effectively. A ΔE of 45.5 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Iron grey vs Agreeable Gray in Real Spaces
2 real rooms side by side. Seeing Iron grey 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.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. Agreeable Gray returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Front Door
On a front door, the color is both the first and last thing you see — a context where even a modest tonal difference reads clearly. Agreeable Gray reflects noticeably more light off the walls, making the space read more open than Iron grey.
Color Details
Iron grey vs Agreeable Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Iron grey 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 Iron grey comparisons
See how Iron grey stacks up against other well-photographed colors across different brands and tones.
