Comparison

Overcast vs Royal Regatta

PPG 1242-4 and Vista Paint 7247, ΔE 2.58 apart

PPG Overcast 1242-4 on a wall, hex #73A3D0
Overcast PPG 1242-4
Vista Paint Royal Regatta 7247 on a wall, hex #78A2D2
Royal Regatta Vista Paint 7247
Zeytin’s verdict · ΔE 2.58Close cousins. Paint a sample of each before you choose.

PPG Overcast (1242-4) and Vista Paint Royal Regatta (7247) measure a delta-E of 2.58 apart. Overcast is 4 LRV points lighter, which is the difference you notice first. Both carry a similar amount of color, at chroma 28.3 and 29. Close, but a large sample of each will show the gap, particularly against white trim. If you need the Royal Regatta depth in PPG's line, start from its LRV of 32.0 rather than matching by name.

Is PPG Overcast the same color as Vista Paint Royal Regatta?

Not quite, but close - PPG Overcast and Vista Paint Royal Regatta are delta-E 2.58 apart, close enough that most rooms would not show the difference.

What is the delta-E between PPG Overcast and Vista Paint Royal Regatta?

The measured color distance between PPG Overcast and Vista Paint Royal Regatta is delta-E 2.58.

Which is lighter, PPG Overcast or Vista Paint Royal Regatta?

PPG Overcast is lighter than Vista Paint Royal Regatta by 4 points of light reflectance (LRV).

CLOSEST PAIRΔE 2.58 Overcast and Royal Regatta
LIGHTESTOvercast LRV 36.0
DARKESTRoyal Regatta LRV 32.0
SPREAD4LRV points

Side by side

measured values
Overcast Royal Regatta
Brand PPG Vista Paint
Code 1242-4 7247
Hex #73A3D0 #78A2D2
Light reflectance 36.0 32.0
Undertone blue blue
Chroma 28.3 29.0
Hue angle 261.6° 266.6°
Color family blue blue

Each on its own

full detail