Cement grey vs Rhythmic Blue
Cement grey (RAL Classic) and Rhythmic Blue (Sherwin-Williams) come from different manufacturers. Hue-wise, Cement grey belongs to the grey family and Rhythmic Blue to the blue family. The 45-point LRV gap — 69 for Rhythmic Blue vs 24 for Cement grey — means Rhythmic Blue will open up a space more effectively. A ΔE of 35.6 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cement grey vs Rhythmic Blue in Real Spaces
2 real rooms side by side. Seeing Cement grey and Rhythmic Blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. Rhythmic Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
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. Rhythmic Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Cement grey vs Rhythmic Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Cement grey on one side and Rhythmic 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 Cement grey comparisons
See how Cement grey stacks up against other well-photographed colors across different brands and tones.
