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.
At LRV 83 vs 27, White Dove is decisively the brighter choice.
Ammonite reflects far more light (LRV 69 vs 27), opening up a space where Blue Lapis encloses it.
At LRV 27 vs 6, Blue Lapis is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 27), opening up a space where Blue Lapis encloses it.
With LRVs of 30 and 27, the two reflect almost the same amount of light.
At LRV 52 vs 27, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 27), opening up a space where Blue Lapis encloses it.
At LRV 58 vs 27, Accessible Beige is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 27 vs 27), so neither reads brighter in a room.
French Gray reflects far more light (LRV 43 vs 27), opening up a space where Blue Lapis encloses it.
Blue Lapis reflects far more light (LRV 27 vs 4), opening up a space where Naval encloses it.
At LRV 55 vs 27, Tranquil Dawn is decisively the brighter choice.
At LRV 27 vs 13, Blue Lapis is decisively the brighter choice.
At LRV 44 vs 27, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 27), opening up a space where Blue Lapis encloses it.
Blue Lapis reads slightly lighter (LRV 27 vs 21), a gap that shows most in low-lit rooms.
At LRV 66 vs 27, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 27, Shoji White is decisively the brighter choice.
At LRV 83 vs 27, Snowbound is decisively the brighter choice.
At LRV 27 vs 12, Blue Lapis is decisively the brighter choice.
At LRV 68 vs 27, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 27), opening up a space where Blue Lapis encloses it.
Calamine reflects far more light (LRV 68 vs 27), opening up a space where Blue Lapis encloses it.
With LRVs of 27 and 25, the two reflect almost the same amount of light.
At LRV 27 vs 12, Blue Lapis is decisively the brighter choice.
At LRV 45 vs 27, Saybrook Sage is decisively the brighter choice.
Pale Green reads slightly lighter (LRV 31 vs 27), a gap that shows most in low-lit rooms.
Blue Lapis reflects far more light (LRV 27 vs 7), opening up a space where Pine Needle encloses it.
Blue Lapis reads slightly lighter (LRV 27 vs 24), a gap that shows most in low-lit rooms.
Guilford Green reflects far more light (LRV 57 vs 27), opening up a space where Blue Lapis encloses it.