Tortuga vs RAL 770-4
Tortuga (PPG) and RAL 770-4 (RAL Effect) come from different manufacturers. These are both greige-greys, so the question isn't which hue to choose — it's where within greige-grey to land. Their light reflectance values are nearly the same — 22 vs 20 — so neither will read significantly brighter or darker than the other. ΔE 3.3 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Tortuga vs RAL 770-4 in Real Spaces
4 real rooms side by side. Tortuga and RAL 770-4 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.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. The distinction reads clearly at room scale, making the choice between them concrete.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
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. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Color Details
Tortuga vs RAL 770-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Tortuga on one side and RAL 770-4 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 Tortuga comparisons
See how Tortuga stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 22), opening up a space where Tortuga encloses it.
At LRV 52 vs 22, Purbeck Stone is decisively the brighter choice.
A 8-point LRV gap (30 vs 22) makes Evergreen Fog the marginally brighter of the two.
At LRV 60 vs 22, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 22), opening up a space where Tortuga encloses it.
Denim Drift reads slightly lighter (LRV 27 vs 22), a gap that shows most in low-lit rooms.
At LRV 43 vs 22, French Gray is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 22), opening up a space where Tortuga encloses it.
Hardwick White reflects far more light (LRV 44 vs 22), opening up a space where Tortuga encloses it.
At LRV 84 vs 22, Pure White is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 22), opening up a space where Tortuga encloses it.
Shoji White reflects far more light (LRV 74 vs 22), opening up a space where Tortuga encloses it.
Tortuga reads slightly lighter (LRV 22 vs 12), a gap that shows most in low-lit rooms.
Tortuga reflects far more light (LRV 22 vs 8), opening up a space where Duck Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 22), opening up a space where Tortuga encloses it.
Tortuga reads slightly lighter (LRV 22 vs 12), a gap that shows most in low-lit rooms.
Saybrook Sage reflects far more light (LRV 45 vs 22), opening up a space where Tortuga encloses it.
A 9-point LRV gap (31 vs 22) makes Pale Green the marginally brighter of the two.