Colonial Blue vs RAL 670-M
Where Colonial Blue belongs to Benjamin Moore's range, RAL 670-M is a RAL Effect color. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. Colonial Blue (LRV 35) reflects noticeably more light than RAL 670-M (LRV 32), a difference of 3 points that becomes especially apparent in rooms with limited natural light. The ΔE 6.0 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.
Colonial Blue vs RAL 670-M in Real Spaces
1 real room side by side. Colonial Blue and RAL 670-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.
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. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Colonial Blue vs RAL 670-M Simulated Comparison
5 simulated room previews — drag the slider on each to see Colonial Blue on one side and RAL 670-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 Colonial Blue comparisons
See how Colonial Blue stacks up against other well-photographed colors across different brands and tones.
