Blue Promise vs Cement grey
Where Blue Promise belongs to PPG's range, Cement grey is a RAL Classic color. Blue Promise reads as blue, while Cement grey reads as grey — two distinct hue families, not close cousins. Blue Promise (LRV 33) reflects noticeably more light than Cement grey (LRV 24), a difference of 9 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 32.6, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Blue Promise vs Cement grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue Promise on one side and Cement grey 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 Blue Promise comparisons
See how Blue Promise stacks up against other well-photographed colors across different brands and tones.
