Comparison

Silver Song vs Comfort Gray

Benjamin Moore 1557 and Sherwin-Williams SW 6205, ΔE 1.83 apart

Benjamin Moore Silver Song 1557 on a wall, hex #C2C3B9
Silver Song Benjamin Moore 1557
Sherwin-Williams Comfort Gray SW 6205 on a wall, hex #BEC3BB
Comfort Gray Sherwin-Williams SW 6205
Zeytin’s verdict · ΔE 1.83Twins, almost. Only daylight on a big wall tells them apart.

Benjamin Moore Silver Song (1557) and Sherwin-Williams Comfort Gray (SW 6205) measure a delta-E of 1.83 apart. They sit within 0.6 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 5.3 and 4.7. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the Silver Song depth in Sherwin-Williams's line, start from its LRV of 53.2 rather than matching by name.

Is Benjamin Moore Silver Song the same color as Sherwin-Williams Comfort Gray?

Not quite, but close - Benjamin Moore Silver Song and Sherwin-Williams Comfort Gray are delta-E 1.83 apart, close enough that most rooms would not show the difference.

What is the delta-E between Benjamin Moore Silver Song and Sherwin-Williams Comfort Gray?

The measured color distance between Benjamin Moore Silver Song and Sherwin-Williams Comfort Gray is delta-E 1.83.

CLOSEST PAIRΔE 1.83 Silver Song and Comfort Gray
LIGHTESTComfort Gray LRV 53.8
DARKESTSilver Song LRV 53.2
SPREAD0.6LRV points

Side by side

measured values
Silver Song Comfort Gray
Brand Benjamin Moore Sherwin-Williams
Code 1557 SW 6205
Hex #C2C3B9 #BEC3BB
Light reflectance 53.2 53.8
Undertone yellow-green cast yellow-green cast
Chroma 5.3 4.7
Hue angle 113.7° 133.2°
Color family gray gray

Each on its own

full detail