Symphony Blue vs Cobalt blue
Symphony Blue (Benjamin Moore) and Cobalt blue (RAL Classic) come from different manufacturers. These are both blues, so the question isn't which hue to choose — it's where within blue to land. Their light reflectance values are nearly the same — 6 vs 6 — so neither will read significantly brighter or darker than the other. ΔE 4.5 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Symphony Blue vs Cobalt blue in Real Spaces
2 real rooms side by side. Symphony Blue and Cobalt 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.
Front Door
On a front door, the color is both the first and last thing you see — a context where even a modest tonal difference reads clearly. The distinction reads clearly at room scale, making the choice between them concrete.
Kitchen Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Color Details
Symphony Blue vs Cobalt blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Symphony Blue on one side and Cobalt 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 Symphony Blue comparisons
See how Symphony Blue stacks up against other well-photographed colors across different brands and tones.
