Comparison

Oat Straw vs Only Yesterday

Benjamin Moore AF-340 and Vista Paint 0296, ΔE 2.63 apart

Benjamin Moore Oat Straw AF-340 on a wall, hex #CFBA92
Oat Straw Benjamin Moore AF-340
Vista Paint Only Yesterday 0296 on a wall, hex #C9B38D
Only Yesterday Vista Paint 0296
Zeytin’s verdict · ΔE 2.63Close cousins. Paint a sample of each before you choose.

Benjamin Moore Oat Straw (AF-340) and Vista Paint Only Yesterday (0296) measure a delta-E of 2.63 apart. They sit within 1.3 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 23.1 and 22.4. Close, but a large sample of each will show the gap, particularly against white trim. If you need the Only Yesterday depth in Benjamin Moore's line, start from its LRV of 48.0 rather than matching by name.

Is Benjamin Moore Oat Straw the same color as Vista Paint Only Yesterday?

Not quite, but close - Benjamin Moore Oat Straw and Vista Paint Only Yesterday are delta-E 2.63 apart, close enough that most rooms would not show the difference.

What is the delta-E between Benjamin Moore Oat Straw and Vista Paint Only Yesterday?

The measured color distance between Benjamin Moore Oat Straw and Vista Paint Only Yesterday is delta-E 2.63.

Which is lighter, Benjamin Moore Oat Straw or Vista Paint Only Yesterday?

Benjamin Moore Oat Straw is lighter than Vista Paint Only Yesterday by 1.3 points of light reflectance (LRV).

CLOSEST PAIRΔE 2.63 Oat Straw and Only Yesterday
LIGHTESTOat Straw LRV 49.3
DARKESTOnly Yesterday LRV 48.0
SPREAD1.3LRV points

Side by side

measured values
Oat Straw Only Yesterday
Brand Benjamin Moore Vista Paint
Code AF-340 0296
Hex #CFBA92 #C9B38D
Light reflectance 49.3 48.0
Undertone yellow yellow
Chroma 23.1 22.4
Hue angle 86.4° 84.5°
Color family tan tan

Each on its own

full detail