Mushroom and Moth Wing: the documented difference
Mushroom has an LRV of 57; Sherwin-Williams Moth Wing SW-9174 is 29. The difference is 28 points, with Mushroom returning more light under the reference measurement. Choose by the material relationship as well as the number. 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. Moth Wing is a warm beige-gray with a substantial midtone depth.
| Color | Brand / code | LRV |
|---|---|---|
| Mushroom | Sherwin-Williams SW-9587 | 57 |
| Moth Wing | Sherwin-Williams SW-9174 | 29 |
The choice beside travertine and undyed wool
Travertine and undyed wool give a material-led way to assess the authentic sample without inventing an undertone from the screen chip.
Set up both candidates with travertine and undyed wool. Use equal-sized boards with the intended finishes and place them in the same orientation. Do not put one directly beside a window and leave the other in shadow. A difference that follows the position rather than the board is a lighting observation, not evidence that the formula changed.
What the comparison can—and cannot—settle
The alternative Shiitake has an LRV of 51.
Compare the actual sample to the stone's background color before labeling it taupe, beige or gray in your scheme. Assess Mushroom and Moth Wing alone as well as side by side. The unchosen board will not remain in the finished room, and a preference created only by that neighbor may not survive its removal. 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.