Brilliant Blue vs Cosmic Cobalt
Both from Behr's palette. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. Brilliant Blue (LRV 15) reflects noticeably more light than Cosmic Cobalt (LRV 10), a difference of 5 points that becomes especially apparent in rooms with limited natural light. Both lean blue, so they'll behave similarly in mixed or changing light conditions. With a ΔE of 10.6, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Brilliant Blue vs Cosmic Cobalt Simulated Comparison
5 simulated room previews — drag the slider on each to see Brilliant Blue on one side and Cosmic Cobalt 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 Brilliant Blue comparisons
See how Brilliant Blue stacks up against other well-photographed colors across different brands and tones.
