Cast Iron vs Forged Steel
Both from Sherwin-Williams's palette. These are both greys, so the question isn't which hue to choose — it's where within grey to land. They have nearly identical light reflectance values (13 vs 10), so they'll read as similarly Dark in most lighting conditions. Both lean neutral, so they'll behave similarly in mixed or changing light conditions. The ΔE 5.9 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cast Iron vs Forged Steel in Real Spaces
3 real rooms side by side. Cast Iron and Forged Steel are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. The distinction reads clearly at room scale, making the choice between them concrete.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Cast Iron vs Forged Steel Simulated Comparison
5 simulated room previews — drag the slider on each to see Cast Iron on one side and Forged Steel 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 Cast Iron comparisons
See how Cast Iron stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 13, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 13), opening up a space where Cast Iron encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 13), opening up a space where Cast Iron encloses it.
Agreeable Gray reflects far more light (LRV 60 vs 13), opening up a space where Cast Iron encloses it.
At LRV 58 vs 13, Accessible Beige is decisively the brighter choice.
At LRV 27 vs 13, Denim Drift is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 13), opening up a space where Cast Iron encloses it.
At LRV 55 vs 13, Tranquil Dawn is decisively the brighter choice.
At LRV 44 vs 13, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 13), opening up a space where Cast Iron encloses it.
At LRV 66 vs 13, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 13, Shoji White is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 13 vs 12), so neither reads brighter in a room.
A 4-point LRV gap (13 vs 8) makes Cast Iron the marginally brighter of the two.
At LRV 68 vs 13, Skimming Stone is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 13 vs 12), so neither reads brighter in a room.
At LRV 45 vs 13, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 13), opening up a space where Cast Iron encloses it.