Comparison

Madder Blue vs Lilac Lake

Dunn-Edwards DE5926 and Vista Paint 7169, ΔE 1.33 apart

Dunn-Edwards Madder Blue DE5926 on a wall, hex #B5B6CE
Madder Blue Dunn-Edwards DE5926
Vista Paint Lilac Lake 7169 on a wall, hex #B6B5CF
Lilac Lake Vista Paint 7169
Zeytin’s verdict · ΔE 1.33Twins, almost. Only daylight on a big wall tells them apart.

Dunn-Edwards Madder Blue (DE5926) and Vista Paint Lilac Lake (7169) measure a delta-E of 1.33 apart. Madder Blue is 1.7 LRV points lighter, which is the difference you notice first. Both carry a similar amount of color, at chroma 13 and 14.1. The undertones part company: Madder Blue reads as a blue undertone at hue angle 289.9 degrees, Lilac Lake as a violet at 292.9. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the Lilac Lake depth in Dunn-Edwards's line, start from its LRV of 46.0 rather than matching by name.

Is Dunn-Edwards Madder Blue the same color as Vista Paint Lilac Lake?

Not quite, but close - Dunn-Edwards Madder Blue and Vista Paint Lilac Lake are delta-E 1.33 apart, close enough that most rooms would not show the difference.

What is the delta-E between Dunn-Edwards Madder Blue and Vista Paint Lilac Lake?

The measured color distance between Dunn-Edwards Madder Blue and Vista Paint Lilac Lake is delta-E 1.33.

Which is lighter, Dunn-Edwards Madder Blue or Vista Paint Lilac Lake?

Dunn-Edwards Madder Blue is lighter than Vista Paint Lilac Lake by 1.7 points of light reflectance (LRV).

CLOSEST PAIRΔE 1.33 Madder Blue and Lilac Lake
LIGHTESTMadder Blue LRV 47.7
DARKESTLilac Lake LRV 46.0
SPREAD1.7LRV points

Side by side

measured values
Madder Blue Lilac Lake
Brand Dunn-Edwards Vista Paint
Code DE5926 7169
Hex #B5B6CE #B6B5CF
Light reflectance 47.7 46.0
Undertone blue undertone violet
Chroma 13.0 14.1
Hue angle 289.9° 292.9°
Color family blue blue

Each on its own

full detail