Comparison

Mountain Air vs Serene Thought

Benjamin Moore CC-636 and Dunn-Edwards DE6234, ΔE 1.68 apart

Benjamin Moore Mountain Air CC-636 on a wall, hex #C4C2B0
Mountain Air Benjamin Moore CC-636
Dunn-Edwards Serene Thought DE6234 on a wall, hex #C5C0AC
Serene Thought Dunn-Edwards DE6234
Zeytin’s verdict · ΔE 1.68Twins, almost. Only daylight on a big wall tells them apart.

Benjamin Moore Mountain Air (CC-636) and Dunn-Edwards Serene Thought (DE6234) measure a delta-E of 1.68 apart. They sit within 0.2 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 9.6 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 Serene Thought depth in Benjamin Moore's line, start from its LRV of 52.5 rather than matching by name.

Is Benjamin Moore Mountain Air the same color as Dunn-Edwards Serene Thought?

Not quite, but close - Benjamin Moore Mountain Air and Dunn-Edwards Serene Thought are delta-E 1.68 apart, close enough that most rooms would not show the difference.

What is the delta-E between Benjamin Moore Mountain Air and Dunn-Edwards Serene Thought?

The measured color distance between Benjamin Moore Mountain Air and Dunn-Edwards Serene Thought is delta-E 1.68.

CLOSEST PAIRΔE 1.68 Mountain Air and Serene Thought
LIGHTESTMountain Air LRV 52.7
DARKESTSerene Thought LRV 52.5
SPREAD0.2LRV points

Side by side

measured values
Mountain Air Serene Thought
Brand Benjamin Moore Dunn-Edwards
Code CC-636 DE6234
Hex #C4C2B0 #C5C0AC
Light reflectance 52.7 52.5
Undertone yellow undertone yellow undertone
Chroma 9.6 10.8
Hue angle 104.8° 99.0°
Color family yellow tan

Each on its own

full detail