Traffic blue vs RAL 640-4
Traffic blue is a RAL Classic color while RAL 640-4 comes from RAL Effect. These are both blues, so the question isn't which hue to choose — it's where within blue to land. At LRV 11 vs 7, Traffic blue will read as the brighter of the two — a 5-point gap that matters most in north-facing or low-light rooms. With a ΔE of 0.9, the difference is subtle — you'd need them side by side to reliably tell them apart. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Traffic blue vs RAL 640-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Traffic blue on one side and RAL 640-4 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 Traffic blue comparisons
See how Traffic blue stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 11), opening up a space where Traffic blue encloses it.
At LRV 83 vs 11, White Dove is decisively the brighter choice.
A 6-point LRV gap (11 vs 6) makes Traffic blue the marginally brighter of the two.
Purbeck Stone reflects far more light (LRV 52 vs 11), opening up a space where Traffic blue encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 11), opening up a space where Traffic blue encloses it.
At LRV 52 vs 11, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 11), opening up a space where Traffic blue encloses it.
At LRV 58 vs 11, Accessible Beige is decisively the brighter choice.
At LRV 27 vs 11, Denim Drift is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 11), opening up a space where Traffic blue encloses it.
Traffic blue reads slightly lighter (LRV 11 vs 4), a gap that shows most in low-lit rooms.
At LRV 55 vs 11, Tranquil Dawn is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 13 vs 11), so neither reads brighter in a room.
At LRV 44 vs 11, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 11), opening up a space where Traffic blue encloses it.
Artichoke reads slightly lighter (LRV 21 vs 11), a gap that shows most in low-lit rooms.
At LRV 66 vs 11, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 11, Shoji White is decisively the brighter choice.
At LRV 83 vs 11, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 11), opening up a space where Traffic blue encloses it.
Their light reflectance is nearly identical (LRV 12 vs 11), so neither reads brighter in a room.
A 3-point LRV gap (11 vs 8) makes Traffic blue the marginally brighter of the two.
At LRV 68 vs 11, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 11), opening up a space where Traffic blue encloses it.
Their light reflectance is nearly identical (LRV 12 vs 11), so neither reads brighter in a room.
At LRV 45 vs 11, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 11), opening up a space where Traffic blue encloses it.