RAL 660-M vs Stratford Blue
RAL 660-M is a RAL Effect color while Stratford Blue comes from Sherwin-Williams. These are both blues, so the question isn't which hue to choose — it's where within blue to land. With LRVs of 24 and 22, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 5.3, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
RAL 660-M vs Stratford Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 660-M on one side and Stratford Blue 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-M comparisons
See how RAL 660-M stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 24), opening up a space where RAL 660-M encloses it.
At LRV 52 vs 24, Purbeck Stone is decisively the brighter choice.
A 7-point LRV gap (30 vs 24) makes Evergreen Fog the marginally brighter of the two.
At LRV 60 vs 24, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 24), opening up a space where RAL 660-M encloses it.
Denim Drift reads slightly lighter (LRV 27 vs 24), a gap that shows most in low-lit rooms.
At LRV 43 vs 24, French Gray is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 24), opening up a space where RAL 660-M encloses it.
Hardwick White reflects far more light (LRV 44 vs 24), opening up a space where RAL 660-M encloses it.
At LRV 84 vs 24, Pure White is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 24), opening up a space where RAL 660-M encloses it.
Shoji White reflects far more light (LRV 74 vs 24), opening up a space where RAL 660-M encloses it.
RAL 660-M reads slightly lighter (LRV 24 vs 12), a gap that shows most in low-lit rooms.
Skimming Stone reflects far more light (LRV 68 vs 24), opening up a space where RAL 660-M encloses it.
RAL 660-M reads slightly lighter (LRV 24 vs 12), a gap that shows most in low-lit rooms.
Saybrook Sage reflects far more light (LRV 45 vs 24), opening up a space where RAL 660-M encloses it.
A 7-point LRV gap (31 vs 24) makes Pale Green the marginally brighter of the two.
At LRV 24 vs 7, RAL 660-M is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 24 vs 24), so neither reads brighter in a room.
At LRV 57 vs 24, Guilford Green is decisively the brighter choice.