Comparison

Night Night vs Royal Treatment

Dunn-Edwards DE5937 and Vista Paint 7189, ΔE 1.39 apart

Dunn-Edwards Night Night DE5937 on a wall, hex #4F4F5E
Night Night Dunn-Edwards DE5937
Vista Paint Royal Treatment 7189 on a wall, hex #51505D
Royal Treatment Vista Paint 7189
Zeytin’s verdict · ΔE 1.39Twins, almost. Only daylight on a big wall tells them apart.

Dunn-Edwards Night Night (DE5937) and Vista Paint Royal Treatment (7189) measure a delta-E of 1.39 apart. They sit within 1.1 LRV points of each other, so neither will look brighter than the other on the same wall. Both carry a similar amount of color, at chroma 9.4 and 8.2. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the Royal Treatment depth in Dunn-Edwards's line, start from its LRV of 7.0 rather than matching by name.

Is Dunn-Edwards Night Night the same color as Vista Paint Royal Treatment?

Not quite, but close - Dunn-Edwards Night Night and Vista Paint Royal Treatment are delta-E 1.39 apart, close enough that most rooms would not show the difference.

What is the delta-E between Dunn-Edwards Night Night and Vista Paint Royal Treatment?

The measured color distance between Dunn-Edwards Night Night and Vista Paint Royal Treatment is delta-E 1.39.

Which is lighter, Dunn-Edwards Night Night or Vista Paint Royal Treatment?

Dunn-Edwards Night Night is lighter than Vista Paint Royal Treatment by 1.1 points of light reflectance (LRV).

CLOSEST PAIRΔE 1.39 Night Night and Royal Treatment
LIGHTESTNight Night LRV 8.1
DARKESTRoyal Treatment LRV 7.0
SPREAD1.1LRV points

Side by side

measured values
Night Night Royal Treatment
Brand Dunn-Edwards Vista Paint
Code DE5937 7189
Hex #4F4F5E #51505D
Light reflectance 8.1 7.0
Undertone violet undertone violet undertone
Chroma 9.4 8.2
Hue angle 291.8° 294.4°
Color family black black

Each on its own

full detail