Comparison

French Lilac vs Purple Purity

Benjamin Moore 1403 and Vista Paint 1246, ΔE 1.95 apart

Benjamin Moore French Lilac 1403 on a wall, hex #C7C3D9
French Lilac Benjamin Moore 1403
Vista Paint Purple Purity 1246 on a wall, hex #CAC6DF
Purple Purity Vista Paint 1246
Zeytin’s verdict · ΔE 1.95Twins, almost. Only daylight on a big wall tells them apart.

Benjamin Moore French Lilac (1403) and Vista Paint Purple Purity (1246) measure a delta-E of 1.95 apart. Purple Purity is 2.9 LRV points lighter, which is the difference you notice first. Both carry a similar amount of color, at chroma 11.9 and 13.4. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the French Lilac depth in Vista Paint's line, start from its LRV of 56.1 rather than matching by name.

Is Benjamin Moore French Lilac the same color as Vista Paint Purple Purity?

Not quite, but close - Benjamin Moore French Lilac and Vista Paint Purple Purity are delta-E 1.95 apart, close enough that most rooms would not show the difference.

What is the delta-E between Benjamin Moore French Lilac and Vista Paint Purple Purity?

The measured color distance between Benjamin Moore French Lilac and Vista Paint Purple Purity is delta-E 1.95.

Which is lighter, Benjamin Moore French Lilac or Vista Paint Purple Purity?

Vista Paint Purple Purity is lighter than Benjamin Moore French Lilac by 2.9 points of light reflectance (LRV).

CLOSEST PAIRΔE 1.95 French Lilac and Purple Purity
LIGHTESTPurple Purity LRV 59.0
DARKESTFrench Lilac LRV 56.1
SPREAD2.9LRV points

Side by side

measured values
French Lilac Purple Purity
Brand Benjamin Moore Vista Paint
Code 1403 1246
Hex #C7C3D9 #CAC6DF
Light reflectance 56.1 59.0
Undertone violet undertone violet undertone
Chroma 11.9 13.4
Hue angle 298.0° 297.3°
Color family blue blue

Each on its own

full detail