Blueprint vs Grey Blue
Blueprint (Behr) and Grey Blue (RAL Classic) come from different manufacturers. Blueprint reads as blue, while Grey Blue reads as blue-grey — two distinct hue families, not close cousins. The 12-point LRV gap — 19 for Blueprint vs 7 for Grey Blue — means Blueprint will open up a space more effectively. A ΔE of 21.9 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Blueprint vs Grey Blue in Real Spaces
2 real rooms side by side. Seeing Blueprint and Grey Blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Blueprint returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Blueprint vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Blueprint on one side and Grey Blue 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 Blueprint comparisons
See how Blueprint stacks up against other well-photographed colors across different brands and tones.
