Steel Curtain vs Black green
Steel Curtain (PPG) and Black green (RAL Classic) come from different manufacturers. Hue-wise, Steel Curtain belongs to the grey family and Black green to the blue-green family. The 27-point LRV gap — 34 for Steel Curtain vs 7 for Black green — means Steel Curtain will open up a space more effectively. A ΔE of 40.8 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Steel Curtain vs Black green in Real Spaces
2 real rooms side by side. Seeing Steel Curtain and Black green in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Steel Curtain returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. Steel Curtain returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Steel Curtain vs Black green Simulated Comparison
5 simulated room previews — drag the slider on each to see Steel Curtain on one side and Black green 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 Steel Curtain comparisons
See how Steel Curtain stacks up against other well-photographed colors across different brands and tones.
