RAL 770-5 vs Illusion
RAL 770-5 is a RAL Effect color while Illusion comes from Sherwin-Williams. Both sit in the greige-grey family, which is useful context if you're narrowing within a single hue direction. At LRV 43 vs 40, RAL 770-5 will read as the brighter of the two — a 3-point gap that matters most in north-facing or low-light rooms. With a ΔE of 2.7, the difference is subtle — you'd need them side by side to reliably tell them apart. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 770-5 vs Illusion in Real Spaces
3 real rooms side by side. RAL 770-5 and Illusion 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
Kitchen lighting tends to be bright and directional, which sharpens contrast and makes undertone differences more apparent. The brightness difference is modest but present — RAL 770-5 gives the walls a little more lift.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The brightness difference is modest but present — RAL 770-5 gives the walls a little more lift.
Color Details
RAL 770-5 vs Illusion Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 770-5 on one side and Illusion 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 RAL 770-5 comparisons
See how RAL 770-5 stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 43), opening up a space where RAL 770-5 encloses it.
A 9-point LRV gap (52 vs 43) makes Purbeck Stone the marginally brighter of the two.
At LRV 43 vs 30, RAL 770-5 is decisively the brighter choice.
At LRV 60 vs 43, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 43), opening up a space where RAL 770-5 encloses it.
RAL 770-5 reflects far more light (LRV 43 vs 27), opening up a space where Denim Drift encloses it.
Their light reflectance is nearly identical (LRV 43 vs 43), so neither reads brighter in a room.
Tranquil Dawn reflects far more light (LRV 55 vs 43), opening up a space where RAL 770-5 encloses it.
With LRVs of 44 and 43, the two reflect almost the same amount of light.
At LRV 84 vs 43, Pure White is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 43), opening up a space where RAL 770-5 encloses it.
Shoji White reflects far more light (LRV 74 vs 43), opening up a space where RAL 770-5 encloses it.
RAL 770-5 reflects far more light (LRV 43 vs 12), opening up a space where Pewter Green encloses it.
RAL 770-5 reflects far more light (LRV 43 vs 8), opening up a space where Duck Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 43), opening up a space where RAL 770-5 encloses it.
RAL 770-5 reflects far more light (LRV 43 vs 12), opening up a space where Vintage Vogue encloses it.
With LRVs of 45 and 43, the two reflect almost the same amount of light.
A 12-point LRV gap (43 vs 31) makes RAL 770-5 the marginally brighter of the two.