Mountain Stream vs RAL 180-M
Where Mountain Stream belongs to PPG's range, RAL 180-M is a RAL Effect color. Hue-wise, Mountain Stream belongs to the blue family and RAL 180-M to the blue-grey family. Mountain Stream (LRV 41) reflects noticeably more light than RAL 180-M (LRV 35), a difference of 6 points that becomes especially apparent in rooms with limited natural light. The ΔE 5.3 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Mountain Stream vs RAL 180-M Simulated Comparison
5 simulated room previews — drag the slider on each to see Mountain Stream on one side and RAL 180-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 Mountain Stream comparisons
See how Mountain Stream stacks up against other well-photographed colors across different brands and tones.
