Cook's Blue vs Pastel blue
Cook's Blue is a Farrow & Ball color while Pastel blue comes from RAL Classic. These are both blues, so the question isn't which hue to choose — it's where within blue to land. At LRV 29 vs 25, Pastel blue will read as the brighter of the two — a 3-point gap that matters most in north-facing or low-light rooms. At ΔE 8.0, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Cook's Blue vs Pastel blue in Real Spaces
1 real room side by side. Cook's Blue and Pastel blue are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Front Door
Front doors are seen in isolation against the rest of the facade, which makes them a high-stakes surface where even subtle differences matter. Pastel blue has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Cook's Blue vs Pastel blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Cook's Blue on one side and Pastel 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 Cook's Blue comparisons
See how Cook's Blue stacks up against other well-photographed colors across different brands and tones.
