Grape Arbor vs RAL 570-4
Where Grape Arbor belongs to PPG's range, RAL 570-4 is a RAL Effect color. Grape Arbor reads as blue-purple, while RAL 570-4 reads as blue — two distinct hue families, not close cousins. They have nearly identical light reflectance values (36 vs 35), so they'll read as similarly Medium in most lighting conditions. The ΔE 5.1 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
Grape Arbor vs RAL 570-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Grape Arbor on one side and RAL 570-4 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 Grape Arbor comparisons
See how Grape Arbor stacks up against other well-photographed colors across different brands and tones.
At LRV 69 vs 36, Ammonite is decisively the brighter choice.
White Dove reflects far more light (LRV 83 vs 36), opening up a space where Grape Arbor encloses it.
Grape Arbor reflects far more light (LRV 36 vs 6), opening up a space where Iron Ore encloses it.
At LRV 52 vs 36, Purbeck Stone is decisively the brighter choice.
A 6-point LRV gap (36 vs 30) makes Grape Arbor the marginally brighter of the two.
Mizzle reflects far more light (LRV 52 vs 36), opening up a space where Grape Arbor encloses it.
At LRV 60 vs 36, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 36), opening up a space where Grape Arbor encloses it.
Grape Arbor reads slightly lighter (LRV 36 vs 27), a gap that shows most in low-lit rooms.
A 7-point LRV gap (43 vs 36) makes French Gray the marginally brighter of the two.
At LRV 36 vs 4, Grape Arbor is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 36), opening up a space where Grape Arbor encloses it.
Grape Arbor reflects far more light (LRV 36 vs 13), opening up a space where Bancha encloses it.
Hardwick White reads slightly lighter (LRV 44 vs 36), a gap that shows most in low-lit rooms.
At LRV 84 vs 36, Pure White is decisively the brighter choice.
At LRV 36 vs 21, Grape Arbor is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 36), opening up a space where Grape Arbor encloses it.
Shoji White reflects far more light (LRV 74 vs 36), opening up a space where Grape Arbor encloses it.
Snowbound reflects far more light (LRV 83 vs 36), opening up a space where Grape Arbor encloses it.
At LRV 51 vs 36, Pigeon is decisively the brighter choice.
Grape Arbor reflects far more light (LRV 36 vs 12), opening up a space where Pewter Green encloses it.
Grape Arbor reflects far more light (LRV 36 vs 8), opening up a space where Duck Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 36), opening up a space where Grape Arbor encloses it.
A 5-point LRV gap (41 vs 36) makes Dix Blue the marginally brighter of the two.
Grape Arbor reflects far more light (LRV 36 vs 12), opening up a space where Vintage Vogue encloses it.
Saybrook Sage reads slightly lighter (LRV 45 vs 36), a gap that shows most in low-lit rooms.
A 5-point LRV gap (36 vs 31) makes Grape Arbor the marginally brighter of the two.