RAL 610-M vs Cosmos
Where RAL 610-M belongs to RAL Effect's range, Cosmos is a Sherwin-Williams color. These are both blues, so the question isn't which hue to choose — it's where within blue to land. Cosmos (LRV 38) reflects noticeably more light than RAL 610-M (LRV 29), a difference of 9 points that becomes especially apparent in rooms with limited natural light. The ΔE 7.6 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 610-M vs Cosmos in Real Spaces
5 real rooms side by side. RAL 610-M and Cosmos 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.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The LRV gap is large enough that Cosmos will make the room feel meaningfully brighter than RAL 610-M would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Cosmos reflects noticeably more light off the walls, making the space read more open than RAL 610-M.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. Cosmos reflects noticeably more light off the walls, making the space read more open than RAL 610-M.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Cosmos reflects noticeably more light off the walls, making the space read more open than RAL 610-M.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. Cosmos reflects noticeably more light off the walls, making the space read more open than RAL 610-M.
Color Details
RAL 610-M vs Cosmos Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 610-M on one side and Cosmos 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 RAL 610-M comparisons
See how RAL 610-M stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 29, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 29), opening up a space where RAL 610-M encloses it.
With LRVs of 30 and 29, the two reflect almost the same amount of light.
Agreeable Gray reflects far more light (LRV 60 vs 29), opening up a space where RAL 610-M encloses it.
At LRV 58 vs 29, Accessible Beige is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 29 vs 27), so neither reads brighter in a room.
French Gray reflects far more light (LRV 43 vs 29), opening up a space where RAL 610-M encloses it.
At LRV 55 vs 29, Tranquil Dawn is decisively the brighter choice.
At LRV 44 vs 29, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 29), opening up a space where RAL 610-M encloses it.
At LRV 66 vs 29, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 29, Shoji White is decisively the brighter choice.
At LRV 29 vs 12, RAL 610-M is decisively the brighter choice.
At LRV 29 vs 8, RAL 610-M is decisively the brighter choice.
At LRV 68 vs 29, Skimming Stone is decisively the brighter choice.
At LRV 29 vs 12, RAL 610-M is decisively the brighter choice.
At LRV 45 vs 29, Saybrook Sage is decisively the brighter choice.
With LRVs of 31 and 29, the two reflect almost the same amount of light.