Comparison

Mountain Dew vs Blue Horizon

PPG 1147-2 and Sherwin-Williams SW 6497, ΔE 2.56 apart

PPG Mountain Dew 1147-2 on a wall, hex #CFE2E0
Mountain Dew PPG 1147-2
Sherwin-Williams Blue Horizon SW 6497 on a wall, hex #D8E7E6
Blue Horizon Sherwin-Williams SW 6497
Zeytin’s verdict · ΔE 2.56Close cousins. Paint a sample of each before you choose.

PPG Mountain Dew (1147-2) and Sherwin-Williams Blue Horizon (SW 6497) measure a delta-E of 2.56 apart. They sit within 0.6 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 6.8 and 5.3. Close, but a large sample of each will show the gap, particularly against white trim. If you need the Mountain Dew depth in Sherwin-Williams's line, start from its LRV of 77.0 rather than matching by name.

Is PPG Mountain Dew the same color as Sherwin-Williams Blue Horizon?

Not quite, but close - PPG Mountain Dew and Sherwin-Williams Blue Horizon are delta-E 2.56 apart, close enough that most rooms would not show the difference.

What is the delta-E between PPG Mountain Dew and Sherwin-Williams Blue Horizon?

The measured color distance between PPG Mountain Dew and Sherwin-Williams Blue Horizon is delta-E 2.56.

CLOSEST PAIRΔE 2.56 Mountain Dew and Blue Horizon
LIGHTESTBlue Horizon LRV 77.6
DARKESTMountain Dew LRV 77.0
SPREAD0.6LRV points

Side by side

measured values
Mountain Dew Blue Horizon
Brand PPG Sherwin-Williams
Code 1147-2 SW 6497
Hex #CFE2E0 #D8E7E6
Light reflectance 77.0 77.6
Undertone cool teal-gray cool teal-gray
Chroma 6.8 5.3
Hue angle 190.1° 193.5°
Color family gray gray

Each on its own

full detail