Castlegate vs Dustblu
Both from Sherwin-Williams's palette. Hue-wise, Castlegate belongs to the grey family and Dustblu to the blue-grey family. Castlegate (LRV 37) reflects noticeably more light than Dustblu (LRV 32), a difference of 5 points that becomes especially apparent in rooms with limited natural light. Both lean neutral, so they'll behave similarly in mixed or changing light conditions. The ΔE 4.7 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.
Castlegate vs Dustblu in Real Spaces
3 real rooms side by side. Castlegate and Dustblu 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. The brightness difference is modest but present — Castlegate gives the walls a little more lift.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Castlegate reads slightly lighter here — a subtle but real difference in how open the space feels.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The brightness difference is modest but present — Castlegate gives the walls a little more lift.
Color Details
Castlegate vs Dustblu Simulated Comparison
5 simulated room previews — drag the slider on each to see Castlegate on one side and Dustblu 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.