Comparison

Pale Iris vs Lilacs in Spring

Benjamin Moore 2073-60 and Vista Paint 1182, ΔE 1.32 apart

Benjamin Moore Pale Iris 2073-60 on a wall, hex #E3CCE0
Pale Iris Benjamin Moore 2073-60
Vista Paint Lilacs in Spring 1182 on a wall, hex #E7CFE4
Lilacs in Spring Vista Paint 1182
Zeytin’s verdict · ΔE 1.32Twins, almost. Only daylight on a big wall tells them apart.

Benjamin Moore Pale Iris (2073-60) and Vista Paint Lilacs in Spring (1182) measure a delta-E of 1.32 apart. Lilacs in Spring is 3.4 LRV points lighter, which is the difference you notice first. Both carry a similar amount of color, at chroma 13.4 and 14. The undertones part company: Pale Iris reads as a purple undertone at hue angle 328.8 degrees, Lilacs in Spring as a purple at 328.6. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the Pale Iris depth in Vista Paint's line, start from its LRV of 63.6 rather than matching by name.

Is Benjamin Moore Pale Iris the same color as Vista Paint Lilacs in Spring?

Not quite, but close - Benjamin Moore Pale Iris and Vista Paint Lilacs in Spring are delta-E 1.32 apart, close enough that most rooms would not show the difference.

What is the delta-E between Benjamin Moore Pale Iris and Vista Paint Lilacs in Spring?

The measured color distance between Benjamin Moore Pale Iris and Vista Paint Lilacs in Spring is delta-E 1.32.

Which is lighter, Benjamin Moore Pale Iris or Vista Paint Lilacs in Spring?

Vista Paint Lilacs in Spring is lighter than Benjamin Moore Pale Iris by 3.4 points of light reflectance (LRV).

CLOSEST PAIRΔE 1.32 Pale Iris and Lilacs in Spring
LIGHTESTLilacs in Spring LRV 67.0
DARKESTPale Iris LRV 63.6
SPREAD3.4LRV points

Side by side

measured values
Pale Iris Lilacs in Spring
Brand Benjamin Moore Vista Paint
Code 2073-60 1182
Hex #E3CCE0 #E7CFE4
Light reflectance 63.6 67.0
Undertone purple undertone purple
Chroma 13.4 14.0
Hue angle 328.8° 328.6°
Color family pink pink

Each on its own

full detail