Rockport Gray → Sherwin Williams
The closest Sherwin Williams matches for Benjamin Moore Rockport Gray (HC-105), ranked by perceptual color distance.
Finding a Sherwin Williams Equivalent for Rockport Gray
If you love Benjamin Moore Rockport Gray but need a Sherwin Williams alternative, you are not alone. This is one of the most common cross-brand paint matching searches, whether you are working with a painter who prefers Sherwin Williams, your local store does not carry Benjamin Moore, or you simply want to compare prices across brands before committing.
Rockport Gray (HC-105) is a medium-dark gray with warm green-gray undertones. A classic medium gray from the Historical Collection. Warm green undertones give it an organic quality. To find a good Sherwin Williams match, we need a color that captures not just the right depth (LRV 29.77) but also that specific undertone character. That is where Delta E color science comes in.
We calculated the perceptual color distance between Rockport Gray and every Sherwin Williams color using the CIE2000 Delta E formula, which measures how different two colors look to the human eye. A Delta E under 2 means most people cannot tell the colors apart. Between 2 and 4, you might notice a difference in certain lighting. Above 5, the difference is clearly visible side by side.
The results are decent but not perfect. The closest Sherwin Williams option is Pewter Tankard (SW 0023) with a Delta E of 4, which is a "good match" level match. Pewter Tankard is warmer. Both are medium warm grays. You will want to test a sample before committing, as the difference may be noticeable in certain lighting.
Sherwin Williams Matches for Rockport Gray
Pewter Tankard is warmer. Both are medium warm grays.
| Rockport Gray | Pewter Tankard | |
|---|---|---|
| LRV | 29.77 | 39 |
| Hex | #A3A199 | #B2ACA4 |
| Undertone | Warm Green-Gray | Warm Pewter |
| Family | Gray | Gray |
Undertone Comparison
Rockport Gray has warm green-gray undertones. A classic medium gray from the Historical Collection. Warm green undertones give it an organic quality.
Pewter Tankard has warm pewter undertones. A warm medium gray with earthy undertones. More depth than Mindful Gray, with a pewter-like quality that feels natural and grounding.
The undertone difference is worth paying attention to. While they are close in overall appearance, the different undertones mean they may diverge in certain lighting. Rockport Gray's warm green-gray quality may read differently than Pewter Tankard's warm pewter character, especially in rooms with strong directional light or colored accents that could pull out one undertone more than the other. Test a sample in your specific room before committing.
How These Colors Behave in Different Lighting
Rockport Gray in Your Room
The green is subtle. Reads as a warm, solid mid-tone gray in most conditions.
Pewter Tankard in Your Room
Reads as a warm, substantial gray in most rooms. The earthy warmth prevents it from feeling cold. Works beautifully with natural materials and warm metals.
LRV and Brightness
Rockport Gray has an LRV of 29.77, while Pewter Tankard has an LRV of 39. That means Pewter Tankard reflects more light. If you switch from Rockport Gray to Pewter Tankard, the room should feel slightly brighter and more open.
Best Rooms for Rockport Gray
Benjamin Moore recommends Rockport Gray for: exterior, living room, bedroom, office, accent wall. With an LRV of 29.77, this is a medium-dark color that is in the medium range, adding real depth and presence to a room. It works best in rooms with good natural light or as an accent wall color. In smaller or darker rooms, pair it with bright white trim to keep the space from feeling closed in.
Pewter Tankard is recommended for: living room, bedroom, dining room, office, accent wall. The recommended applications differ slightly between brands, but the color's properties should work in the same rooms regardless of which brand you choose. Trust the LRV and undertone data more than the specific room suggestions, and always test in your actual space.
Rockport Gray in Other Brands
Looking for Rockport Gray equivalents in other brands besides Sherwin Williams? We have matches across all major paint brands.
Frequently Asked Questions
The closest Sherwin Williams match for Rockport Gray (HC-105) is Pewter Tankard (SW 0023) with a Delta E of 4, which rates as a "good match" match. Pewter Tankard is warmer. Both are medium warm grays. Delta E measures perceptual color distance on a scale where under 2 means nearly identical, 2 to 4 means close with subtle differences, and over 5 means clearly noticeable.
No, they are not identical. Rockport Gray is a Benjamin Moore color with warm green-gray undertones and an LRV of 29.77. Pewter Tankard is a Sherwin Williams color with warm pewter undertones and an LRV of 39. With a Delta E of 4, the difference is subtle and mainly visible in direct side-by-side comparison. Paint formulations differ between brands, so even colors with similar values can look slightly different due to pigment concentration, binders, and finish.
With a Delta E of 4, the difference is enough that they should not be used on adjacent walls in the same room. You can use them in separate rooms of the same house, but be aware that walking from one room to the other may reveal the difference, especially if the rooms have similar lighting. For the most consistent look, pick one brand for all connected living spaces and reserve the other brand for visually separate rooms like bathrooms or bedrooms behind closed doors.
There are several practical reasons to look for a Sherwin Williams equivalent. Price differences between brands can be significant on large projects. Availability matters if your nearest paint store or home center specializes in Sherwin Williams. Some painters have strong preferences for one brand's formula based on coverage, dry time, or workability. And if you are touching up existing Sherwin Williams work, matching within the same brand gives you the best consistency for seamless results.
Match calculations use Delta E (CIE2000) computed from Lab color space conversion. Color data sourced from manufacturer specifications. Last reviewed: March 22, 2026.