Teton Blue vs RAL 170-M
Where Teton Blue belongs to Behr's range, RAL 170-M is a RAL Effect color. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. RAL 170-M (LRV 40) reflects noticeably more light than Teton Blue (LRV 31), a difference of 9 points that becomes especially apparent in rooms with limited natural light. The ΔE 9.3 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Teton Blue vs RAL 170-M in Real Spaces
2 real rooms side by side. Teton Blue and RAL 170-M 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 RAL 170-M will make the room feel meaningfully brighter than Teton Blue would.
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. RAL 170-M reflects noticeably more light off the walls, making the space read more open than Teton Blue.
Color Details
Teton Blue vs RAL 170-M Simulated Comparison
5 simulated room previews — drag the slider on each to see Teton Blue on one side and RAL 170-M 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 Teton Blue comparisons
See how Teton Blue stacks up against other well-photographed colors across different brands and tones.
