Stiffkey Blue vs RAL 650-5
Stiffkey Blue is a Farrow & Ball color while RAL 650-5 comes from RAL Effect. These are both blues, so the question isn't which hue to choose — it's where within blue to land. With LRVs of 10 and 8, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 14.0, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Stiffkey Blue vs RAL 650-5 in Real Spaces
3 real rooms side by side. Seeing Stiffkey Blue and RAL 650-5 in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Kitchen
Kitchen lighting tends to be bright and directional, which sharpens contrast and makes undertone differences more apparent. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Color Details
Stiffkey Blue vs RAL 650-5 Simulated Comparison
5 simulated room previews — drag the slider on each to see Stiffkey Blue on one side and RAL 650-5 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 Stiffkey Blue comparisons
See how Stiffkey Blue stacks up against other well-photographed colors across different brands and tones.
