Regal Azure vs Cook's Blue
Regal Azure (Cloverdale Paint) 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. The 4-point LRV gap — 25 for Cook's Blue vs 21 for Regal Azure — means Cook's Blue will open up a space more effectively. A ΔE of 11.4 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Regal Azure vs Cook's Blue in Real Spaces
3 real rooms side by side. Seeing Regal Azure 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.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Cook's Blue reads slightly lighter here — a subtle but real difference in how open the space feels.
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. Cook's Blue has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Cook's Blue has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Regal Azure vs Cook's Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Regal Azure 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 Regal Azure comparisons
See how Regal Azure stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 21), opening up a space where Regal Azure encloses it.
At LRV 83 vs 21, White Dove is decisively the brighter choice.
At LRV 21 vs 6, Regal Azure is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 21), opening up a space where Regal Azure encloses it.
Evergreen Fog reads slightly lighter (LRV 30 vs 21), a gap that shows most in low-lit rooms.
At LRV 52 vs 21, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 21), opening up a space where Regal Azure encloses it.
At LRV 58 vs 21, Accessible Beige is decisively the brighter choice.
A 6-point LRV gap (27 vs 21) makes Denim Drift the marginally brighter of the two.
French Gray reflects far more light (LRV 43 vs 21), opening up a space where Regal Azure encloses it.
Regal Azure reflects far more light (LRV 21 vs 4), opening up a space where Naval encloses it.
At LRV 55 vs 21, Tranquil Dawn is decisively the brighter choice.
A 8-point LRV gap (21 vs 13) makes Regal Azure the marginally brighter of the two.
At LRV 44 vs 21, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 21), opening up a space where Regal Azure encloses it.
With LRVs of 21 and 21, the two reflect almost the same amount of light.
At LRV 66 vs 21, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 21, Shoji White is decisively the brighter choice.
At LRV 83 vs 21, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 21), opening up a space where Regal Azure encloses it.
A 9-point LRV gap (21 vs 12) makes Regal Azure the marginally brighter of the two.
At LRV 21 vs 8, Regal Azure is decisively the brighter choice.
At LRV 68 vs 21, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 21), opening up a space where Regal Azure encloses it.
A 9-point LRV gap (21 vs 12) makes Regal Azure the marginally brighter of the two.
At LRV 45 vs 21, Saybrook Sage is decisively the brighter choice.
Pale Green reads slightly lighter (LRV 31 vs 21), a gap that shows most in low-lit rooms.