RAL 640-2 vs Dynamic Blue
RAL 640-2 (RAL Effect) and Dynamic Blue (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. The 11-point LRV gap — 24 for Dynamic Blue vs 13 for RAL 640-2 — means Dynamic Blue will open up a space more effectively. ΔE 5.2 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 640-2 vs Dynamic Blue in Real Spaces
3 real rooms side by side. RAL 640-2 and Dynamic Blue 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. Dynamic Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Kitchen
Kitchens often have the harshest, most revealing light in the house — under-cabinet LEDs and overhead fixtures that strip away subtlety. Dynamic Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Dynamic Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
RAL 640-2 vs Dynamic Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 640-2 on one side and Dynamic 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 640-2 comparisons
See how RAL 640-2 stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 13, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 13), opening up a space where RAL 640-2 encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 13), opening up a space where RAL 640-2 encloses it.
Agreeable Gray reflects far more light (LRV 60 vs 13), opening up a space where RAL 640-2 encloses it.
At LRV 58 vs 13, Accessible Beige is decisively the brighter choice.
At LRV 27 vs 13, Denim Drift is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 13), opening up a space where RAL 640-2 encloses it.
At LRV 55 vs 13, Tranquil Dawn is decisively the brighter choice.
At LRV 44 vs 13, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 13), opening up a space where RAL 640-2 encloses it.
At LRV 66 vs 13, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 13, Shoji White is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 13 vs 12), so neither reads brighter in a room.
At LRV 68 vs 13, Skimming Stone is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 13 vs 12), so neither reads brighter in a room.
At LRV 45 vs 13, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 13), opening up a space where RAL 640-2 encloses it.
RAL 640-2 reads slightly lighter (LRV 13 vs 7), a gap that shows most in low-lit rooms.
Cement grey reads slightly lighter (LRV 24 vs 13), a gap that shows most in low-lit rooms.
Guilford Green reflects far more light (LRV 57 vs 13), opening up a space where RAL 640-2 encloses it.