Cast Iron vs Sage Green Light
Both are Sherwin-Williams colors. Cast Iron reads as grey, while Sage Green Light reads as green-greige — two distinct hue families, not close cousins. At LRV 16 vs 13, Sage Green Light will read as the brighter of the two — a 3-point gap that matters most in north-facing or low-light rooms. The tonal difference — Cast Iron's neutral character against Sage Green Light's warm — becomes most visible against white trim or in morning light. At ΔE 6.9, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cast Iron vs Sage Green Light in Real Spaces
3 real rooms side by side. Cast Iron and Sage Green Light 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
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. Sage Green Light has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The brightness difference is modest but present — Sage Green Light gives the walls a little more lift.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The brightness difference is modest but present — Sage Green Light gives the walls a little more lift.
Color Details
Cast Iron vs Sage Green Light Simulated Comparison
5 simulated room previews — drag the slider on each to see Cast Iron on one side and Sage Green Light 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.