Comparison

Celestial vs Calm Tint

Sherwin-Williams SW 6808 and Vista Paint 0645, ΔE 2.34 apart

Sherwin-Williams Celestial SW 6808 on a wall, hex #97B3D0
Celestial Sherwin-Williams SW 6808
Vista Paint Calm Tint 0645 on a wall, hex #91B3CE
Calm Tint Vista Paint 0645
Zeytin’s verdict · ΔE 2.34Close cousins. Paint a sample of each before you choose.

Sherwin-Williams Celestial (SW 6808) and Vista Paint Calm Tint (0645) measure a delta-E of 2.34 apart. They sit within 0.5 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 18 and 18.2. Close, but a large sample of each will show the gap, particularly against white trim. If you need the Calm Tint depth in Sherwin-Williams's line, start from its LRV of 43.0 rather than matching by name.

Is Sherwin-Williams Celestial the same color as Vista Paint Calm Tint?

Not quite, but close - Sherwin-Williams Celestial and Vista Paint Calm Tint are delta-E 2.34 apart, close enough that most rooms would not show the difference.

What is the delta-E between Sherwin-Williams Celestial and Vista Paint Calm Tint?

The measured color distance between Sherwin-Williams Celestial and Vista Paint Calm Tint is delta-E 2.34.

CLOSEST PAIRΔE 2.34 Celestial and Calm Tint
LIGHTESTCelestial LRV 43.5
DARKESTCalm Tint LRV 43.0
SPREAD0.5LRV points

Side by side

measured values
Celestial Calm Tint
Brand Sherwin-Williams Vista Paint
Code SW 6808 0645
Hex #97B3D0 #91B3CE
Light reflectance 43.5 43.0
Undertone blue blue
Chroma 18.0 18.2
Hue angle 260.6° 253.3°
Color family blue teal

Each on its own

full detail