RAL 670-M vs Open Seas
Where RAL 670-M belongs to RAL Effect's range, Open Seas 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. Open Seas (LRV 39) reflects noticeably more light than RAL 670-M (LRV 32), a difference of 7 points that becomes especially apparent in rooms with limited natural light. The ΔE 4.3 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
RAL 670-M vs Open Seas in Real Spaces
1 real room side by side. RAL 670-M and Open Seas 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.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Open Seas reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
RAL 670-M vs Open Seas Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 670-M on one side and Open Seas 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 670-M comparisons
See how RAL 670-M stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 32, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 32), opening up a space where RAL 670-M encloses it.
With LRVs of 32 and 30, the two reflect almost the same amount of light.
Agreeable Gray reflects far more light (LRV 60 vs 32), opening up a space where RAL 670-M encloses it.
At LRV 58 vs 32, Accessible Beige is decisively the brighter choice.
A 5-point LRV gap (32 vs 27) makes RAL 670-M the marginally brighter of the two.
French Gray reads slightly lighter (LRV 43 vs 32), a gap that shows most in low-lit rooms.
At LRV 55 vs 32, Tranquil Dawn is decisively the brighter choice.
A 11-point LRV gap (44 vs 32) makes Hardwick White the marginally brighter of the two.
Pure White reflects far more light (LRV 84 vs 32), opening up a space where RAL 670-M encloses it.
At LRV 66 vs 32, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 32, Shoji White is decisively the brighter choice.
At LRV 32 vs 12, RAL 670-M is decisively the brighter choice.
At LRV 68 vs 32, Skimming Stone is decisively the brighter choice.
At LRV 32 vs 12, RAL 670-M is decisively the brighter choice.
At LRV 45 vs 32, Saybrook Sage is decisively the brighter choice.
With LRVs of 32 and 31, the two reflect almost the same amount of light.
RAL 670-M reflects far more light (LRV 32 vs 7), opening up a space where Pine Needle encloses it.
RAL 670-M reads slightly lighter (LRV 32 vs 24), a gap that shows most in low-lit rooms.
Guilford Green reflects far more light (LRV 57 vs 32), opening up a space where RAL 670-M encloses it.