The floor finish is the reference
Judge Coastal Plain against your actual wood finish, not a generic wood species label. The starting material direction here is cream fabric and weathered wood. Coastal Plain gives cool green more depth than Contented, which can help the wall hold its own behind pale furnishings.
Weathered wood and cream fabrics provide a restrained support palette, but a narrow hallway may need a separate depth decision.
Test the dominant wood color, not one grain line
Use the broad background of the timber to assess Coastal Plain, rather than matching one grain streak. Wood contributes color as well as texture. Decide whether the paint should contrast with that warmth or repeat it, keeping the dominant fabric in the same view.
Coastal Plain has an LRV of 37; Sherwin-Williams Contented SW-6191 is 52. The difference is 15 points, with Contented returning more light under the reference measurement.
The condition for keeping Coastal Plain
Keep the added depth if it anchors the furniture; check a lighter green before using it through a narrow hall. The undertones and neighboring colors covers that related choice. The trim color comparison covers that related choice.
Keep the Coastal Plain board vertical at the floor edge. A match to one pale grain line can misrepresent the dominant color across the installed floor. Judge the broad timber background from standing height. If the floor will be refinished, repeat the comparison with the approved new stain sample before ordering the wall paint. Before ordering samples, compare room-planning features in the paint color visualizer roundup.
Sources & notes
Color specifications: Sherwin-Williams Coastal Plain SW-6192. The recorded LRV is 37. Named comparison values come from the respective manufacturers; material schemes are editorial suggestions.
This guide reviews published color information and proposes practical sample checks. It does not claim first-hand paint testing or customer-review scores. Sherwin-Williams does not sponsor or endorse this site. Product names and trademarks belong to their respective owners. Confirm the color in a physical sample and select the coating for the actual surface and finish.