Epimethius vs RAL 660-4
Epimethius is a Cloverdale Paint color while RAL 660-4 comes from RAL Effect. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. At LRV 40 vs 31, Epimethius will read as the brighter of the two — a 9-point gap that matters most in north-facing or low-light rooms. At ΔE 4.2, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Epimethius vs RAL 660-4 in Real Spaces
4 real rooms side by side. Epimethius and RAL 660-4 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.
Living Room
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. Epimethius returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The LRV gap is large enough that Epimethius will make the room feel meaningfully brighter than RAL 660-4 would.
Kitchen
Kitchen lighting tends to be bright and directional, which sharpens contrast and makes undertone differences more apparent. The LRV gap is large enough that Epimethius will make the room feel meaningfully brighter than RAL 660-4 would.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The LRV gap is large enough that Epimethius will make the room feel meaningfully brighter than RAL 660-4 would.
Color Details
Epimethius vs RAL 660-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Epimethius on one side and RAL 660-4 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 Epimethius comparisons
See how Epimethius stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 40), opening up a space where Epimethius encloses it.
At LRV 83 vs 40, White Dove is decisively the brighter choice.
At LRV 40 vs 6, Epimethius is decisively the brighter choice.
Purbeck Stone reads slightly lighter (LRV 52 vs 40), a gap that shows most in low-lit rooms.
Epimethius reads slightly lighter (LRV 40 vs 30), a gap that shows most in low-lit rooms.
A 12-point LRV gap (52 vs 40) makes Mizzle the marginally brighter of the two.
Agreeable Gray reflects far more light (LRV 60 vs 40), opening up a space where Epimethius encloses it.
At LRV 58 vs 40, Accessible Beige is decisively the brighter choice.
At LRV 40 vs 27, Epimethius is decisively the brighter choice.
French Gray reads slightly lighter (LRV 43 vs 40), a gap that shows most in low-lit rooms.
Epimethius reflects far more light (LRV 40 vs 4), opening up a space where Naval encloses it.
At LRV 55 vs 40, Tranquil Dawn is decisively the brighter choice.
At LRV 40 vs 13, Epimethius is decisively the brighter choice.
A 4-point LRV gap (44 vs 40) makes Hardwick White the marginally brighter of the two.
Pure White reflects far more light (LRV 84 vs 40), opening up a space where Epimethius encloses it.
Epimethius reflects far more light (LRV 40 vs 21), opening up a space where Artichoke encloses it.
At LRV 66 vs 40, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 40, Shoji White is decisively the brighter choice.
At LRV 83 vs 40, Snowbound is decisively the brighter choice.
Pigeon reads slightly lighter (LRV 51 vs 40), a gap that shows most in low-lit rooms.
At LRV 40 vs 12, Epimethius is decisively the brighter choice.
At LRV 40 vs 8, Epimethius is decisively the brighter choice.
At LRV 68 vs 40, Skimming Stone is decisively the brighter choice.
With LRVs of 41 and 40, the two reflect almost the same amount of light.
At LRV 40 vs 12, Epimethius is decisively the brighter choice.
A 5-point LRV gap (45 vs 40) makes Saybrook Sage the marginally brighter of the two.
Epimethius reads slightly lighter (LRV 40 vs 31), a gap that shows most in low-lit rooms.