RAL 620-4 vs Seaworthy
RAL 620-4 (RAL Effect) and Seaworthy (Sherwin-Williams) come from different manufacturers. These are both blues, so the question isn't which hue to choose — it's where within blue to land. Their light reflectance values are nearly the same — 9 vs 7 — so neither will read significantly brighter or darker than the other. ΔE 6.2 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 620-4 vs Seaworthy in Real Spaces
2 real rooms side by side. RAL 620-4 and Seaworthy 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.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Kitchen Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Color Details
RAL 620-4 vs Seaworthy Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 620-4 on one side and Seaworthy 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 620-4 comparisons
See how RAL 620-4 stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 9, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 9), opening up a space where RAL 620-4 encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 9), opening up a space where RAL 620-4 encloses it.
Agreeable Gray reflects far more light (LRV 60 vs 9), opening up a space where RAL 620-4 encloses it.
At LRV 58 vs 9, Accessible Beige is decisively the brighter choice.
At LRV 27 vs 9, Denim Drift is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 9), opening up a space where RAL 620-4 encloses it.
At LRV 55 vs 9, Tranquil Dawn is decisively the brighter choice.
At LRV 44 vs 9, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 9), opening up a space where RAL 620-4 encloses it.
At LRV 66 vs 9, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 9, Shoji White is decisively the brighter choice.
A 3-point LRV gap (12 vs 9) makes Pewter Green the marginally brighter of the two.
Their light reflectance is nearly identical (LRV 9 vs 8), so neither reads brighter in a room.
At LRV 68 vs 9, Skimming Stone is decisively the brighter choice.
A 3-point LRV gap (12 vs 9) makes Vintage Vogue the marginally brighter of the two.
At LRV 45 vs 9, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 9), opening up a space where RAL 620-4 encloses it.