RAL 550-4 vs Grey Blue
RAL 550-4 is a RAL Effect color while Grey Blue comes from RAL Classic. At LRV 23 vs 7, RAL 550-4 will read as the brighter of the two — a 15-point gap that matters most in north-facing or low-light rooms. At ΔE 28.5, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions.
RAL 550-4 vs Grey Blue Color Comparison
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.
Color Details
RAL 550-4 vs Grey Blue in Real Spaces
Seeing RAL 550-4 and Grey Blue in actual rooms makes the difference concrete. Browse the spaces below to get a feel for how each color lives on a wall. Showing 2 room types where both colors have photos.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The LRV gap is large enough that RAL 550-4 will make the room feel meaningfully brighter than Grey Blue would.
More RAL 550-4 comparisons
See how RAL 550-4 stacks up against other well-photographed colors across different brands and tones.
Light vs dark contrast
RAL Effect vs Benjamin Moore
Light vs dark contrast
RAL Effect vs Farrow & Ball
RAL 550-4 reads lighter
RAL Effect vs Sherwin-Williams
Light vs dark contrast
RAL Effect vs Farrow & Ball
RAL Effect vs Sherwin-Williams
RAL Effect vs Sherwin-Williams
Light vs dark contrast
RAL Effect vs Farrow & Ball
Light vs dark contrast
RAL Effect vs Sherwin-Williams
RAL Effect vs Dulux
RAL Effect vs Dulux
Light vs dark contrast
RAL Effect vs Dulux
Light vs dark contrast
RAL Effect vs Benjamin Moore
RAL 550-4 reads lighter
RAL Effect vs Benjamin Moore
Pale Green reads lighter
RAL Effect vs RAL Classic
RAL 550-4 reads lighter
RAL Effect vs Dulux
RAL Effect vs RAL Classic
RAL Effect vs RAL Classic
RAL 550-4 reads lighter
RAL Effect vs RAL Classic
Light vs dark contrast
RAL Effect vs Jotun
Windmill Lane reads lighter
RAL Effect vs Little Greene
Senses reads lighter
RAL Effect vs Jotun
RAL 550-4 reads lighter
RAL Effect vs Little Greene
Light vs dark contrast
RAL Effect vs Jotun
RAL Effect vs Little Greene
RAL Effect vs Little Greene
RAL 550-4 reads lighter
RAL Effect vs Behr
Light vs dark contrast
RAL Effect vs Behr
Teton Blue reads lighter
RAL Effect vs Behr
Light vs dark contrast
RAL Effect
Light vs dark contrast
RAL Effect
Light vs dark contrast
RAL Effect
RAL 550-4 reads lighter
RAL Effect vs NCS
Light vs dark contrast
RAL Effect vs NCS
Light vs dark contrast
RAL Effect vs NCS