Comparison

Greenwich Gate vs Serene Thought

Benjamin Moore CSP-170 and Dunn-Edwards DE6234, ΔE 1.82 apart

Benjamin Moore Greenwich Gate CSP-170 on a wall, hex #C5BEAD
Greenwich Gate Benjamin Moore CSP-170
Dunn-Edwards Serene Thought DE6234 on a wall, hex #C5C0AC
Serene Thought Dunn-Edwards DE6234
Zeytin’s verdict · ΔE 1.82Twins, almost. Only daylight on a big wall tells them apart.

Benjamin Moore Greenwich Gate (CSP-170) and Dunn-Edwards Serene Thought (DE6234) measure a delta-E of 1.82 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 9.5 and 10.8. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the Greenwich Gate depth in Dunn-Edwards's line, start from its LRV of 51.4 rather than matching by name.

Is Benjamin Moore Greenwich Gate the same color as Dunn-Edwards Serene Thought?

Not quite, but close - Benjamin Moore Greenwich Gate and Dunn-Edwards Serene Thought are delta-E 1.82 apart, close enough that most rooms would not show the difference.

What is the delta-E between Benjamin Moore Greenwich Gate and Dunn-Edwards Serene Thought?

The measured color distance between Benjamin Moore Greenwich Gate and Dunn-Edwards Serene Thought is delta-E 1.82.

Which is lighter, Benjamin Moore Greenwich Gate or Dunn-Edwards Serene Thought?

Dunn-Edwards Serene Thought is lighter than Benjamin Moore Greenwich Gate by 1.1 points of light reflectance (LRV).

CLOSEST PAIRΔE 1.82 Greenwich Gate and Serene Thought
LIGHTESTSerene Thought LRV 52.5
DARKESTGreenwich Gate LRV 51.4
SPREAD1.1LRV points

Side by side

measured values
Greenwich Gate Serene Thought
Brand Benjamin Moore Dunn-Edwards
Code CSP-170 DE6234
Hex #C5BEAD #C5C0AC
Light reflectance 51.4 52.5
Undertone yellow undertone yellow undertone
Chroma 9.5 10.8
Hue angle 92.8° 99.0°
Color family tan tan

Each on its own

full detail