RAL 660-3 vs Jamaica Bay
Where RAL 660-3 belongs to RAL Effect's range, Jamaica Bay is a Sherwin-Williams color. These are both blues, so the question isn't which hue to choose — it's where within blue to land. Jamaica Bay (LRV 30) reflects noticeably more light than RAL 660-3 (LRV 27), a difference of 3 points that becomes especially apparent in rooms with limited natural light. The ΔE 4.9 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 660-3 vs Jamaica Bay in Real Spaces
5 real rooms side by side. RAL 660-3 and Jamaica Bay 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 — Jamaica Bay gives the walls a little more lift.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Jamaica Bay reads slightly lighter here — a subtle but real difference in how open the space feels.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. Jamaica Bay reads slightly lighter here — a subtle but real difference in how open the space feels.
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. Jamaica Bay reads slightly lighter here — a subtle but real difference in how open the space feels.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. Jamaica Bay reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
RAL 660-3 vs Jamaica Bay Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 660-3 on one side and Jamaica Bay 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 RAL 660-3 comparisons
See how RAL 660-3 stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 27), opening up a space where RAL 660-3 encloses it.
At LRV 52 vs 27, Purbeck Stone is decisively the brighter choice.
A 3-point LRV gap (30 vs 27) makes Evergreen Fog the marginally brighter of the two.
At LRV 60 vs 27, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 27), opening up a space where RAL 660-3 encloses it.
With LRVs of 27 and 27, the two reflect almost the same amount of light.
At LRV 43 vs 27, French Gray is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 27), opening up a space where RAL 660-3 encloses it.
Hardwick White reflects far more light (LRV 44 vs 27), opening up a space where RAL 660-3 encloses it.
At LRV 84 vs 27, Pure White is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 27), opening up a space where RAL 660-3 encloses it.
Shoji White reflects far more light (LRV 74 vs 27), opening up a space where RAL 660-3 encloses it.
RAL 660-3 reflects far more light (LRV 27 vs 12), opening up a space where Pewter Green encloses it.
RAL 660-3 reflects far more light (LRV 27 vs 8), opening up a space where Duck Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 27), opening up a space where RAL 660-3 encloses it.
RAL 660-3 reflects far more light (LRV 27 vs 12), opening up a space where Vintage Vogue encloses it.
Saybrook Sage reflects far more light (LRV 45 vs 27), opening up a space where RAL 660-3 encloses it.
A 4-point LRV gap (31 vs 27) makes Pale Green the marginally brighter of the two.