Cosmic Blue vs Obsidian Green
Where Cosmic Blue belongs to Behr's range, Obsidian Green is a Little Greene color. Hue-wise, Cosmic Blue belongs to the blue family and Obsidian Green to the green family. Cosmic Blue (LRV 47) reflects noticeably more light than Obsidian Green (LRV 1), a difference of 45 points that becomes especially apparent in rooms with limited natural light. Cosmic Blue runs blue while Obsidian Green is decidedly green, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 66.3, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 6 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cosmic Blue vs Obsidian Green in Real Spaces
6 real rooms side by side. Seeing Cosmic Blue and Obsidian Green in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. The LRV gap is large enough that Cosmic Blue will make the room feel meaningfully brighter than Obsidian Green would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Cosmic Blue reflects noticeably more light off the walls, making the space read more open than Obsidian Green.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. Cosmic Blue reflects noticeably more light off the walls, making the space read more open than Obsidian Green.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Cosmic Blue reflects noticeably more light off the walls, making the space read more open than Obsidian Green.
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. Cosmic Blue reflects noticeably more light off the walls, making the space read more open than Obsidian Green.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Cosmic Blue reflects noticeably more light off the walls, making the space read more open than Obsidian Green.
Color Details
Cosmic Blue vs Obsidian Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Cosmic Blue on one side and Obsidian Green 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.
