Comparison

Yorktowne Green vs Still Water

Benjamin Moore HC-133 and Sherwin-Williams SW 6223, ΔE 1.47 apart

Benjamin Moore Yorktowne Green HC-133 on a wall, hex #465A5D
Yorktowne Green Benjamin Moore HC-133
Sherwin-Williams Still Water SW 6223 on a wall, hex #4A5D5F
Still Water Sherwin-Williams SW 6223
Zeytin’s verdict · ΔE 1.47Twins, almost. Only daylight on a big wall tells them apart.

Benjamin Moore Yorktowne Green (HC-133) and Sherwin-Williams Still Water (SW 6223) measure a delta-E of 1.47 apart. They sit within 0.7 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 8 and 7.6. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the Yorktowne Green depth in Sherwin-Williams's line, start from its LRV of 9.4 rather than matching by name.

Is Benjamin Moore Yorktowne Green the same color as Sherwin-Williams Still Water?

Not quite, but close - Benjamin Moore Yorktowne Green and Sherwin-Williams Still Water are delta-E 1.47 apart, close enough that most rooms would not show the difference.

What is the delta-E between Benjamin Moore Yorktowne Green and Sherwin-Williams Still Water?

The measured color distance between Benjamin Moore Yorktowne Green and Sherwin-Williams Still Water is delta-E 1.47.

CLOSEST PAIRΔE 1.47 Yorktowne Green and Still Water
LIGHTESTStill Water LRV 10.1
DARKESTYorktowne Green LRV 9.4
SPREAD0.7LRV points

Side by side

measured values
Yorktowne Green Still Water
Brand Benjamin Moore Sherwin-Williams
Code HC-133 SW 6223
Hex #465A5D #4A5D5F
Light reflectance 9.4 10.1
Undertone teal undertone teal undertone
Chroma 8.0 7.6
Hue angle 211.8° 207.9°
Color family black black

Each on its own

full detail