Comparison

Sweet Dreams vs Dillard's Blue

Benjamin Moore 847 and Vista Paint 0685, ΔE 0.72 apart

Benjamin Moore Sweet Dreams 847 on a wall, hex #D6E7E2
Sweet Dreams Benjamin Moore 847
Vista Paint Dillard's Blue 0685 on a wall, hex #D7E9E4
Dillard's Blue Vista Paint 0685
Zeytin’s verdict · ΔE 0.72Same color. Buy the cheaper one.

Benjamin Moore Sweet Dreams (847) and Vista Paint Dillard's Blue (0685) measure a delta-E of 0.72 apart. Dillard's Blue is 3.2 LRV points lighter, which is the difference you notice first. Both carry a similar amount of color, at chroma 6.6 and 6.9. Side by side on a wall these are effectively the same color. Choose on price and availability rather than appearance. If you need the Sweet Dreams depth in Vista Paint's line, start from its LRV of 75.8 rather than matching by name.

Is Benjamin Moore Sweet Dreams the same color as Vista Paint Dillard's Blue?

Yes, by measurement - Benjamin Moore Sweet Dreams and Vista Paint Dillard's Blue are only delta-E 0.72 apart, which is below what the human eye can reliably tell apart.

What is the delta-E between Benjamin Moore Sweet Dreams and Vista Paint Dillard's Blue?

The measured color distance between Benjamin Moore Sweet Dreams and Vista Paint Dillard's Blue is delta-E 0.72.

Which is lighter, Benjamin Moore Sweet Dreams or Vista Paint Dillard's Blue?

Vista Paint Dillard's Blue is lighter than Benjamin Moore Sweet Dreams by 3.2 points of light reflectance (LRV).

CLOSEST PAIRΔE 0.72 Sweet Dreams and Dillard's Blue
LIGHTESTDillard's Blue LRV 79.0
DARKESTSweet Dreams LRV 75.8
SPREAD3.2LRV points

Side by side

measured values
Sweet Dreams Dillard's Blue
Brand Benjamin Moore Vista Paint
Code 847 0685
Hex #D6E7E2 #D7E9E4
Light reflectance 75.8 79.0
Undertone green cast green cast
Chroma 6.6 6.9
Hue angle 175.8° 176.9°
Color family gray gray

Each on its own

full detail