The decision for this particular color
Mushroom can be considered for bathroom if its color and depth suit the space; the first design question is a mushroom neutral judged against real stone. 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.
Let tile and porcelain set the limits
Put the Mushroom sample next to the basin, the largest tile and the grout line. Turn on the vanity light and view the sample directly, then in the mirror; reflections can add other colored surfaces to the scene. The travertine and undyed wool direction is a starting idea, but the bathroom's actual ceramic and stone take priority over an inspiration palette.
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 daylight and evening-light checks covers that related choice.
Choose a Sherwin-Williams coating appropriate to the bathroom surface and follow the manufacturer's preparation and application guidance. Color SW-9587 does not identify a moisture-control system. Ventilation, substrate condition and the intended finish are separate decisions; approve the color under the real vanity lighting before ordering the full paint quantity. 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.

