Cast Iron vs Lady's Slipper
Both are Sherwin-Williams colors. Cast Iron reads as grey, while Lady's Slipper reads as blue — two distinct hue families, not close cousins. At LRV 76 vs 13, Lady's Slipper will read as the brighter of the two — a 64-point gap that matters most in north-facing or low-light rooms. The tonal difference — Cast Iron's neutral character against Lady's Slipper's cool — becomes most visible against white trim or in morning light. At ΔE 49.1, 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.
Cast Iron vs Lady's Slipper in Real Spaces
6 real rooms side by side. Seeing Cast Iron and Lady's Slipper 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. Lady's Slipper returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
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 Lady's Slipper will make the room feel meaningfully brighter than Cast Iron 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 Lady's Slipper will make the room feel meaningfully brighter than Cast Iron 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 Lady's Slipper will make the room feel meaningfully brighter than Cast Iron 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. Lady's Slipper reflects noticeably more light off the walls, making the space read more open than Cast Iron.
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 Lady's Slipper will make the room feel meaningfully brighter than Cast Iron would.
Color Details
Cast Iron vs Lady's Slipper Simulated Comparison
5 simulated room previews — drag the slider on each to see Cast Iron on one side and Lady's Slipper 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.