RAL 730-6 vs RAL 740-4
Both are RAL Effect colors. RAL 730-6 reads as blue, while RAL 740-4 reads as blue-green — two distinct hue families, not close cousins. With LRVs of 17 and 17, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 5.4, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 730-6 vs RAL 740-4 in Real Spaces
3 real rooms side by side. RAL 730-6 and RAL 740-4 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.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Color Details
RAL 730-6 vs RAL 740-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 730-6 on one side and RAL 740-4 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 RAL 730-6 comparisons
See how RAL 730-6 stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 17, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 17), opening up a space where RAL 730-6 encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 17), opening up a space where RAL 730-6 encloses it.
Agreeable Gray reflects far more light (LRV 60 vs 17), opening up a space where RAL 730-6 encloses it.
At LRV 58 vs 17, Accessible Beige is decisively the brighter choice.
A 10-point LRV gap (27 vs 17) makes Denim Drift the marginally brighter of the two.
French Gray reflects far more light (LRV 43 vs 17), opening up a space where RAL 730-6 encloses it.
At LRV 55 vs 17, Tranquil Dawn is decisively the brighter choice.
At LRV 44 vs 17, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 17), opening up a space where RAL 730-6 encloses it.
At LRV 66 vs 17, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 17, Shoji White is decisively the brighter choice.
A 5-point LRV gap (17 vs 12) makes RAL 730-6 the marginally brighter of the two.
A 9-point LRV gap (17 vs 8) makes RAL 730-6 the marginally brighter of the two.
At LRV 68 vs 17, Skimming Stone is decisively the brighter choice.
A 5-point LRV gap (17 vs 12) makes RAL 730-6 the marginally brighter of the two.
At LRV 45 vs 17, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 17), opening up a space where RAL 730-6 encloses it.