Cast Iron vs Soulful Blue
Cast Iron and Soulful Blue come from the same Sherwin-Williams collection. Hue-wise, Cast Iron belongs to the grey family and Soulful Blue to the blue-grey family. The 8-point LRV gap — 20 for Soulful Blue vs 13 for Cast Iron — means Soulful Blue will open up a space more effectively. Where Cast Iron leans neutral, Soulful Blue reads cool — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 20.9 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.
Cast Iron vs Soulful Blue in Real Spaces
2 real rooms side by side. Seeing Cast Iron and Soulful Blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Soulful Blue has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
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. Soulful Blue has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Cast Iron vs Soulful Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Cast Iron on one side and Soulful Blue 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.
