Castor Grey vs RAL 770-6
Where Castor Grey belongs to Cloverdale Paint's range, RAL 770-6 is a RAL Effect color. Hue-wise, Castor Grey belongs to the green-grey family and RAL 770-6 to the grey family. RAL 770-6 (LRV 21) reflects noticeably more light than Castor Grey (LRV 19), a difference of 3 points that becomes especially apparent in rooms with limited natural light. The ΔE 4.6 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.
Castor Grey vs RAL 770-6 in Real Spaces
3 real rooms side by side. Castor Grey and RAL 770-6 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.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. The distinction reads clearly at room scale, making the choice between them concrete.
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. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Castor Grey vs RAL 770-6 Simulated Comparison
5 simulated room previews — drag the slider on each to see Castor Grey on one side and RAL 770-6 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 Castor Grey comparisons
See how Castor Grey stacks up against other well-photographed colors across different brands and tones.
