Comparison

Secret vs Slippery Shale

Benjamin Moore AF-710 and Vista Paint 8328, ΔE 1.29 apart

Benjamin Moore Secret AF-710 on a wall, hex #888983
Secret Benjamin Moore AF-710
Vista Paint Slippery Shale 8328 on a wall, hex #878B85
Slippery Shale Vista Paint 8328
Zeytin’s verdict · ΔE 1.29Twins, almost. Only daylight on a big wall tells them apart.

Benjamin Moore Secret (AF-710) and Vista Paint Slippery Shale (8328) measure a delta-E of 1.29 apart. They sit within 0.9 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 3.4 and 3.8. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the Slippery Shale depth in Benjamin Moore's line, start from its LRV of 25.0 rather than matching by name.

Is Benjamin Moore Secret the same color as Vista Paint Slippery Shale?

Not quite, but close - Benjamin Moore Secret and Vista Paint Slippery Shale are delta-E 1.29 apart, close enough that most rooms would not show the difference.

What is the delta-E between Benjamin Moore Secret and Vista Paint Slippery Shale?

The measured color distance between Benjamin Moore Secret and Vista Paint Slippery Shale is delta-E 1.29.

CLOSEST PAIRΔE 1.29 Secret and Slippery Shale
LIGHTESTSecret LRV 25.9
DARKESTSlippery Shale LRV 25.0
SPREAD0.9LRV points

Side by side

measured values
Secret Slippery Shale
Brand Benjamin Moore Vista Paint
Code AF-710 8328
Hex #888983 #878B85
Light reflectance 25.9 25.0
Undertone yellow-green cast yellow-green cast
Chroma 3.4 3.8
Hue angle 116.4° 134.5°
Color family gray gray

Each on its own

full detail