Mushroom LRV 57: How Much Contrast to Expect

What 57 tells you about Mushroom

The published LRV of Sherwin-Williams Mushroom SW-9587 is 57. It describes light reflectance; it does not specify an undertone or predict the brightness of your room. 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.

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.

The editorial priority for this color is a mushroom neutral judged against real stone. Place the Mushroom board against the actual trim, then move it to the least illuminated part of the proposed wall. Judge the visible boundary from a normal viewing distance. A value that looks suitable on a table may produce too little distinction from one fixed finish and too much from another.

What the comparison can—and cannot—settle

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. Mushroom SW-9587 has a light-to-medium reflectance value; the name alone does not establish a precise undertone. The value measures reflectance, so it cannot by itself identify an undertone, a coating finish or the amount of illumination needed in the room. The daylight and evening-light checks covers that related choice.

Compare the actual sample to the stone's background color before labeling it taupe, beige or gray in your scheme. Do not read LRV 57 as a percentage improvement in perceived room brightness. Make the decision with the board upright at the actual wall or cabinet position, including the least illuminated portion. The north-facing room assessment covers that related choice. Before ordering samples, compare room-planning features in the paint color visualizer roundup.