Charter Blue vs RAL 580-4
Where Charter Blue belongs to Behr's range, RAL 580-4 is a RAL Effect color. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. RAL 580-4 (LRV 18) reflects noticeably more light than Charter Blue (LRV 15), a difference of 3 points that becomes especially apparent in rooms with limited natural light. The ΔE 6.3 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.
Charter Blue vs RAL 580-4 in Real Spaces
1 real room side by side. Charter Blue and RAL 580-4 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.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. RAL 580-4 reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
Charter Blue vs RAL 580-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Charter Blue on one side and RAL 580-4 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 Charter Blue comparisons
See how Charter Blue stacks up against other well-photographed colors across different brands and tones.
