Comparison

Blue Horizon vs Caribbean Sky

Sherwin-Williams SW 6497 and Vista Paint 7419, ΔE 0.72 apart

Sherwin-Williams Blue Horizon SW 6497 on a wall, hex #D8E7E6
Blue Horizon Sherwin-Williams SW 6497
Vista Paint Caribbean Sky 7419 on a wall, hex #D7E8E7
Caribbean Sky Vista Paint 7419
Zeytin’s verdict · ΔE 0.72Same color. Buy the cheaper one.

Sherwin-Williams Blue Horizon (SW 6497) and Vista Paint Caribbean Sky (7419) measure a delta-E of 0.72 apart. Blue Horizon is 2.6 LRV points lighter, which is the difference you notice first. Both carry a similar amount of color, at chroma 5.3 and 6. Side by side on a wall these are effectively the same color. Choose on price and availability rather than appearance. If you need the Caribbean Sky depth in Sherwin-Williams's line, start from its LRV of 75.0 rather than matching by name.

Is Sherwin-Williams Blue Horizon the same color as Vista Paint Caribbean Sky?

Yes, by measurement - Sherwin-Williams Blue Horizon and Vista Paint Caribbean Sky are only delta-E 0.72 apart, which is below what the human eye can reliably tell apart.

What is the delta-E between Sherwin-Williams Blue Horizon and Vista Paint Caribbean Sky?

The measured color distance between Sherwin-Williams Blue Horizon and Vista Paint Caribbean Sky is delta-E 0.72.

Which is lighter, Sherwin-Williams Blue Horizon or Vista Paint Caribbean Sky?

Sherwin-Williams Blue Horizon is lighter than Vista Paint Caribbean Sky by 2.6 points of light reflectance (LRV).

CLOSEST PAIRΔE 0.72 Blue Horizon and Caribbean Sky
LIGHTESTBlue Horizon LRV 77.6
DARKESTCaribbean Sky LRV 75.0
SPREAD2.6LRV points

Side by side

measured values
Blue Horizon Caribbean Sky
Brand Sherwin-Williams Vista Paint
Code SW 6497 7419
Hex #D8E7E6 #D7E8E7
Light reflectance 77.6 75.0
Undertone cool teal-gray cool teal-gray
Chroma 5.3 6.0
Hue angle 193.5° 194.1°
Color family gray gray

Each on its own

full detail