RAL 670-3 vs Porch Ceiling
Where RAL 670-3 belongs to RAL Effect's range, Porch Ceiling is a Sherwin-Williams color. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. Porch Ceiling (LRV 53) reflects noticeably more light than RAL 670-3 (LRV 47), a difference of 6 points that becomes especially apparent in rooms with limited natural light. The ΔE 4.4 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. 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 670-3 vs Porch Ceiling Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 670-3 on one side and Porch Ceiling 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 670-3 comparisons
See how RAL 670-3 stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 47, White Dove is decisively the brighter choice.
Purbeck Stone reads slightly lighter (LRV 52 vs 47), a gap that shows most in low-lit rooms.
RAL 670-3 reflects far more light (LRV 47 vs 30), opening up a space where Evergreen Fog encloses it.
Agreeable Gray reflects far more light (LRV 60 vs 47), opening up a space where RAL 670-3 encloses it.
A 10-point LRV gap (58 vs 47) makes Accessible Beige the marginally brighter of the two.
At LRV 47 vs 27, RAL 670-3 is decisively the brighter choice.
RAL 670-3 reads slightly lighter (LRV 47 vs 43), a gap that shows most in low-lit rooms.
A 8-point LRV gap (55 vs 47) makes Tranquil Dawn the marginally brighter of the two.
A 4-point LRV gap (47 vs 44) makes RAL 670-3 the marginally brighter of the two.
Pure White reflects far more light (LRV 84 vs 47), opening up a space where RAL 670-3 encloses it.
At LRV 66 vs 47, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 47, Shoji White is decisively the brighter choice.
At LRV 47 vs 12, RAL 670-3 is decisively the brighter choice.
At LRV 47 vs 8, RAL 670-3 is decisively the brighter choice.
At LRV 68 vs 47, Skimming Stone is decisively the brighter choice.
At LRV 47 vs 12, RAL 670-3 is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 47 vs 45), so neither reads brighter in a room.
RAL 670-3 reflects far more light (LRV 47 vs 31), opening up a space where Pale Green encloses it.