The decision for this particular color
Mushroom can be considered for exterior if its color and depth suit the space; confirm exterior product, tint and substrate compatibility separately. Mushroom SW-9587 is much lighter than Moth Wing, though its name alone cannot settle whether a room will read it as beige or taupe.
Travertine and undyed wool give a material-led way to assess the authentic sample without inventing an undertone from the screen chip.
Read the facade in sun and shade
Place the Mushroom sample outside beside the roof, masonry, window frame and any surface that will remain unpainted. Examine an open wall and a sheltered area under an eave. Interior materials such as travertine and undyed wool do not establish exterior compatibility. Judge the facade from the street as well as close up, because the amount of painted area is very different from a handheld chip.
The Mushroom comparison to make in this room
Mushroom has an LRV of 57; Sherwin-Williams Shiitake SW-9173 is 51. The difference is 6 points, with Mushroom returning more light under the reference measurement.
The condition for keeping Mushroom
Compare the actual sample to the stone's background color before labeling it taupe, beige or gray in your scheme. The coordinating color options covers that related choice.
Mushroom is being assessed here as a color, not as a complete exterior product specification. Ask the supplier to confirm tint availability, substrate suitability and any restrictions for the intended coating. For factory-finished or vinyl materials, follow the relevant manufacturer requirements rather than choosing solely from a reflectance value. The trim color comparison covers that related choice. Before ordering samples, compare room-planning features in the paint color visualizer roundup.
Sources & notes
Color specifications: Sherwin-Williams Mushroom SW-9587. The recorded LRV is 57. 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.

