Cosmic Blue vs Blue Ground
Where Cosmic Blue belongs to Behr's range, Blue Ground is a Farrow & Ball color. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. Blue Ground (LRV 49) reflects noticeably more light than Cosmic Blue (LRV 47), a difference of 3 points that becomes especially apparent in rooms with limited natural light. Cosmic Blue runs blue while Blue Ground is decidedly cool, which means they'll respond very differently to warm vs cool light sources. The ΔE 4.6 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cosmic Blue vs Blue Ground in Real Spaces
3 real rooms side by side. Cosmic Blue and Blue Ground are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. The distinction reads clearly at room scale, making the choice between them concrete.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Cosmic Blue vs Blue Ground Simulated Comparison
5 simulated room previews — drag the slider on each to see Cosmic Blue on one side and Blue Ground 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 Cosmic Blue comparisons
See how Cosmic Blue stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 47), opening up a space where Cosmic Blue encloses it.
At LRV 83 vs 47, White Dove is decisively the brighter choice.
At LRV 47 vs 6, Cosmic Blue is decisively the brighter choice.
Purbeck Stone reads slightly lighter (LRV 52 vs 47), a gap that shows most in low-lit rooms.
Cosmic Blue reflects far more light (LRV 47 vs 30), opening up a space where Evergreen Fog encloses it.
A 5-point LRV gap (52 vs 47) makes Mizzle the marginally brighter of the two.
Agreeable Gray reflects far more light (LRV 60 vs 47), opening up a space where Cosmic Blue encloses it.
A 11-point LRV gap (58 vs 47) makes Accessible Beige the marginally brighter of the two.
At LRV 47 vs 27, Cosmic Blue is decisively the brighter choice.
Cosmic Blue reads slightly lighter (LRV 47 vs 43), a gap that shows most in low-lit rooms.
Cosmic Blue reflects far more light (LRV 47 vs 4), opening up a space where Naval encloses it.
A 8-point LRV gap (55 vs 47) makes Tranquil Dawn the marginally brighter of the two.
At LRV 47 vs 13, Cosmic Blue is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 47 vs 44), so neither reads brighter in a room.
Pure White reflects far more light (LRV 84 vs 47), opening up a space where Cosmic Blue encloses it.
Cosmic Blue reflects far more light (LRV 47 vs 21), opening up a space where Artichoke encloses it.
At LRV 66 vs 47, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 47, Shoji White is decisively the brighter choice.
At LRV 83 vs 47, Snowbound is decisively the brighter choice.
Pigeon reads slightly lighter (LRV 51 vs 47), a gap that shows most in low-lit rooms.
At LRV 47 vs 12, Cosmic Blue is decisively the brighter choice.
At LRV 47 vs 8, Cosmic Blue is decisively the brighter choice.
At LRV 68 vs 47, Skimming Stone is decisively the brighter choice.
Cosmic Blue reads slightly lighter (LRV 47 vs 41), a gap that shows most in low-lit rooms.
At LRV 47 vs 12, Cosmic Blue is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 47 vs 45), so neither reads brighter in a room.
Cosmic Blue reflects far more light (LRV 47 vs 31), opening up a space where Pale Green encloses it.