Brillant blue vs Yellow grey
Both from RAL Classic's palette. Hue-wise, Brillant blue belongs to the blue family and Yellow grey to the greige-grey family. Yellow grey (LRV 27) reflects noticeably more light than Brillant blue (LRV 15), a difference of 12 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 42.7, 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 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Brillant blue vs Yellow grey in Real Spaces
2 real rooms side by side. Seeing Brillant blue and Yellow grey in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. Yellow grey reflects noticeably more light off the walls, making the space read more open than Brillant blue.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The LRV gap is large enough that Yellow grey will make the room feel meaningfully brighter than Brillant blue would.
Color Details
Brillant blue vs Yellow grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Brillant blue on one side and Yellow grey 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 Brillant blue comparisons
See how Brillant blue stacks up against other well-photographed colors across different brands and tones.
