Undine vs RAL 730-4
Where Undine belongs to Behr's range, RAL 730-4 is a RAL Effect color. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. Undine (LRV 43) reflects noticeably more light than RAL 730-4 (LRV 38), a difference of 5 points that becomes especially apparent in rooms with limited natural light. The ΔE 3.8 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Undine vs RAL 730-4 in Real Spaces
1 real room side by side. Undine and RAL 730-4 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.
Color Details
Undine vs RAL 730-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Undine on one side and RAL 730-4 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 Undine comparisons
See how Undine stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 43, White Dove is decisively the brighter choice.
Purbeck Stone reads slightly lighter (LRV 52 vs 43), a gap that shows most in low-lit rooms.
Undine reflects far more light (LRV 43 vs 30), opening up a space where Evergreen Fog encloses it.
Agreeable Gray reflects far more light (LRV 60 vs 43), opening up a space where Undine encloses it.
At LRV 58 vs 43, Accessible Beige is decisively the brighter choice.
At LRV 43 vs 27, Undine is decisively the brighter choice.
With LRVs of 43 and 43, the two reflect almost the same amount of light.
A 12-point LRV gap (55 vs 43) makes Tranquil Dawn the marginally brighter of the two.
Their light reflectance is nearly identical (LRV 44 vs 43), so neither reads brighter in a room.
Pure White reflects far more light (LRV 84 vs 43), opening up a space where Undine encloses it.
At LRV 66 vs 43, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 43, Shoji White is decisively the brighter choice.
At LRV 43 vs 12, Undine is decisively the brighter choice.
At LRV 43 vs 8, Undine is decisively the brighter choice.
At LRV 68 vs 43, Skimming Stone is decisively the brighter choice.
At LRV 43 vs 12, Undine is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 45 vs 43), so neither reads brighter in a room.
Undine reads slightly lighter (LRV 43 vs 31), a gap that shows most in low-lit rooms.