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.
White Dove reflects far more light (LRV 83 vs 19), opening up a space where Castor Grey encloses it.
At LRV 69 vs 19, Ammonite is decisively the brighter choice.
Castor Grey reflects far more light (LRV 19 vs 6), opening up a space where Iron Ore encloses it.
At LRV 52 vs 19, Purbeck Stone is decisively the brighter choice.
A 12-point LRV gap (30 vs 19) makes Evergreen Fog the marginally brighter of the two.
Mizzle reflects far more light (LRV 52 vs 19), opening up a space where Castor Grey encloses it.
At LRV 60 vs 19, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 19), opening up a space where Castor Grey encloses it.
Denim Drift reads slightly lighter (LRV 27 vs 19), a gap that shows most in low-lit rooms.
At LRV 43 vs 19, French Gray is decisively the brighter choice.
At LRV 19 vs 4, Castor Grey is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 19), opening up a space where Castor Grey encloses it.
Castor Grey reads slightly lighter (LRV 19 vs 13), a gap that shows most in low-lit rooms.
Hardwick White reflects far more light (LRV 44 vs 19), opening up a space where Castor Grey encloses it.
At LRV 84 vs 19, Pure White is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 21 vs 19), so neither reads brighter in a room.
Balboa Mist reflects far more light (LRV 66 vs 19), opening up a space where Castor Grey encloses it.
Shoji White reflects far more light (LRV 74 vs 19), opening up a space where Castor Grey encloses it.
Snowbound reflects far more light (LRV 83 vs 19), opening up a space where Castor Grey encloses it.
Castor Grey reads slightly lighter (LRV 19 vs 12), a gap that shows most in low-lit rooms.
Skimming Stone reflects far more light (LRV 68 vs 19), opening up a space where Castor Grey encloses it.
At LRV 41 vs 19, Dix Blue is decisively the brighter choice.
At LRV 68 vs 19, Calamine is decisively the brighter choice.
A 6-point LRV gap (25 vs 19) makes Treron the marginally brighter of the two.
Castor Grey reads slightly lighter (LRV 19 vs 12), a gap that shows most in low-lit rooms.
Saybrook Sage reflects far more light (LRV 45 vs 19), opening up a space where Castor Grey encloses it.
At LRV 31 vs 19, Pale Green is decisively the brighter choice.
A 12-point LRV gap (19 vs 7) makes Castor Grey the marginally brighter of the two.
A 5-point LRV gap (24 vs 19) makes Cement grey the marginally brighter of the two.
At LRV 57 vs 19, Guilford Green is decisively the brighter choice.