Blue Harmony vs RAL 580-4
Where Blue Harmony belongs to Jotun's range, RAL 580-4 is a RAL Effect color. Hue-wise, Blue Harmony belongs to the blue-grey family and RAL 580-4 to the blue family. They have nearly identical light reflectance values (17 vs 18), so they'll read as similarly Dark in most lighting conditions. With a ΔE of 16.0, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Blue Harmony vs RAL 580-4 in Real Spaces
2 real rooms side by side. Seeing Blue Harmony and RAL 580-4 in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. 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.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Blue Harmony vs RAL 580-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue Harmony on one side and RAL 580-4 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 Blue Harmony comparisons
See how Blue Harmony stacks up against other well-photographed colors across different brands and tones.
At LRV 69 vs 17, Ammonite is decisively the brighter choice.
White Dove reflects far more light (LRV 83 vs 17), opening up a space where Blue Harmony encloses it.
Blue Harmony reads slightly lighter (LRV 17 vs 6), a gap that shows most in low-lit rooms.
At LRV 52 vs 17, Purbeck Stone is decisively the brighter choice.
At LRV 30 vs 17, Evergreen Fog is decisively the brighter choice.
Mizzle reflects far more light (LRV 52 vs 17), opening up a space where Blue Harmony encloses it.
At LRV 60 vs 17, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 17), opening up a space where Blue Harmony encloses it.
Denim Drift reads slightly lighter (LRV 27 vs 17), a gap that shows most in low-lit rooms.
At LRV 43 vs 17, French Gray is decisively the brighter choice.
At LRV 17 vs 4, Blue Harmony is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 17), opening up a space where Blue Harmony encloses it.
Blue Harmony reads slightly lighter (LRV 17 vs 13), a gap that shows most in low-lit rooms.
Hardwick White reflects far more light (LRV 44 vs 17), opening up a space where Blue Harmony encloses it.
At LRV 84 vs 17, Pure White is decisively the brighter choice.
A 5-point LRV gap (21 vs 17) makes Artichoke the marginally brighter of the two.
Balboa Mist reflects far more light (LRV 66 vs 17), opening up a space where Blue Harmony encloses it.
Shoji White reflects far more light (LRV 74 vs 17), opening up a space where Blue Harmony encloses it.
Snowbound reflects far more light (LRV 83 vs 17), opening up a space where Blue Harmony encloses it.
At LRV 51 vs 17, Pigeon is decisively the brighter choice.
Blue Harmony reads slightly lighter (LRV 17 vs 12), a gap that shows most in low-lit rooms.
Blue Harmony reads slightly lighter (LRV 17 vs 8), a gap that shows most in low-lit rooms.
Skimming Stone reflects far more light (LRV 68 vs 17), opening up a space where Blue Harmony encloses it.
At LRV 41 vs 17, Dix Blue is decisively the brighter choice.
Blue Harmony reads slightly lighter (LRV 17 vs 12), a gap that shows most in low-lit rooms.
Saybrook Sage reflects far more light (LRV 45 vs 17), opening up a space where Blue Harmony encloses it.
At LRV 31 vs 17, Pale Green is decisively the brighter choice.