Comparison

Mountain Lake vs Queen of the Night

PPG 1156-6 and Vista Paint 0655, ΔE 2.86 apart

PPG Mountain Lake 1156-6 on a wall, hex #2D5975
Mountain Lake PPG 1156-6
Vista Paint Queen of the Night 0655 on a wall, hex #395E7A
Queen of the Night Vista Paint 0655
Zeytin’s verdict · ΔE 2.86Close cousins. Paint a sample of each before you choose.

PPG Mountain Lake (1156-6) and Vista Paint Queen of the Night (0655) measure a delta-E of 2.86 apart. They sit within 0 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 21.4 and 20.4. Close, but a large sample of each will show the gap, particularly against white trim. If you need the Mountain Lake depth in Vista Paint's line, start from its LRV of 10.0 rather than matching by name.

Is PPG Mountain Lake the same color as Vista Paint Queen of the Night?

Not quite, but close - PPG Mountain Lake and Vista Paint Queen of the Night are delta-E 2.86 apart, close enough that most rooms would not show the difference.

What is the delta-E between PPG Mountain Lake and Vista Paint Queen of the Night?

The measured color distance between PPG Mountain Lake and Vista Paint Queen of the Night is delta-E 2.86.

CLOSEST PAIRΔE 2.86 Mountain Lake and Queen of the Night
LIGHTESTMountain Lake LRV 10.0
DARKESTMountain Lake LRV 10.0
SPREAD0LRV points

Side by side

measured values
Mountain Lake Queen of the Night
Brand PPG Vista Paint
Code 1156-6 0655
Hex #2D5975 #395E7A
Light reflectance 10.0 10.0
Undertone blue blue
Chroma 21.4 20.4
Hue angle 253.5° 256.9°
Color family teal blue

Each on its own

full detail