Blue Lapis vs Cook's Blue
Blue Lapis (Benjamin Moore) and Cook's Blue (Farrow & Ball) come from different manufacturers. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. Their light reflectance values are nearly the same — 27 vs 25 — so neither will read significantly brighter or darker than the other. Where Blue Lapis leans blue, Cook's Blue reads cool — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 14.9 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Blue Lapis vs Cook's Blue in Real Spaces
1 real room side by side. Seeing Blue Lapis and Cook's Blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Color Details
Blue Lapis vs Cook's Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue Lapis on one side and Cook's 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 Blue Lapis comparisons
See how Blue Lapis stacks up against other well-photographed colors across different brands and tones.
