Vast Sky vs J438
Where Vast Sky belongs to Sherwin-Williams's range, J438 is a Tikkurila color. These are both blues, so the question isn't which hue to choose — it's where within blue to land. Vast Sky (LRV 55) reflects noticeably more light than J438 (LRV 45), a difference of 9 points that becomes especially apparent in rooms with limited natural light. The ΔE 7.2 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Vast Sky vs J438 Simulated Comparison
5 simulated room previews — drag the slider on each to see Vast Sky on one side and J438 on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More Vast Sky comparisons
See how Vast Sky stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 55, White Dove is decisively the brighter choice.
Vast Sky reads slightly lighter (LRV 55 vs 52), a gap that shows most in low-lit rooms.
Vast Sky reflects far more light (LRV 55 vs 30), opening up a space where Evergreen Fog encloses it.
Agreeable Gray reads slightly lighter (LRV 60 vs 55), a gap that shows most in low-lit rooms.
Their light reflectance is nearly identical (LRV 58 vs 55), so neither reads brighter in a room.
At LRV 55 vs 27, Vast Sky is decisively the brighter choice.
Vast Sky reads slightly lighter (LRV 55 vs 43), a gap that shows most in low-lit rooms.
Their light reflectance is nearly identical (LRV 55 vs 55), so neither reads brighter in a room.
A 11-point LRV gap (55 vs 44) makes Vast Sky the marginally brighter of the two.
Pure White reflects far more light (LRV 84 vs 55), opening up a space where Vast Sky encloses it.
A 11-point LRV gap (66 vs 55) makes Balboa Mist the marginally brighter of the two.
At LRV 74 vs 55, Shoji White is decisively the brighter choice.
At LRV 55 vs 12, Vast Sky is decisively the brighter choice.
At LRV 68 vs 55, Skimming Stone is decisively the brighter choice.
At LRV 55 vs 12, Vast Sky is decisively the brighter choice.
A 9-point LRV gap (55 vs 45) makes Vast Sky the marginally brighter of the two.
Vast Sky reflects far more light (LRV 55 vs 31), opening up a space where Pale Green encloses it.
Vast Sky reflects far more light (LRV 55 vs 7), opening up a space where Pine Needle encloses it.
Vast Sky reflects far more light (LRV 55 vs 24), opening up a space where Cement grey encloses it.
With LRVs of 57 and 55, the two reflect almost the same amount of light.