Telegrey 4 vs Rhythmic Blue
Where Telegrey 4 belongs to RAL Classic's range, Rhythmic Blue is a Sherwin-Williams color. Hue-wise, Telegrey 4 belongs to the grey family and Rhythmic Blue to the blue family. Rhythmic Blue (LRV 69) reflects noticeably more light than Telegrey 4 (LRV 59), a difference of 10 points that becomes especially apparent in rooms with limited natural light. The ΔE 9.0 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Telegrey 4 vs Rhythmic Blue in Real Spaces
1 real room side by side. Telegrey 4 and Rhythmic 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.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Rhythmic Blue reflects noticeably more light off the walls, making the space read more open than Telegrey 4.
Color Details
Telegrey 4 vs Rhythmic Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Telegrey 4 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 Telegrey 4 comparisons
See how Telegrey 4 stacks up against other well-photographed colors across different brands and tones.
