What 34.77 tells you about Heather Gray
The published LRV of Benjamin Moore Heather Gray 2139-40 is 34.77. It describes light reflectance; it does not specify an undertone or predict the brightness of your room. Heather Gray's sage undertone gives the gray a green role that should be welcomed rather than concealed.
The choice beside cream stone and dark oak
Cream stone provides a lighter boundary while dark oak brings weight; the wall must be considered between those two values.
Compare Heather Gray and Intrigue at equal size, first considering depth and then hue. A lighter blue, green or pink is still a colored surface. Use the LRV to organize the depth question without assuming that it measures saturation or predicts which hue the room will favor.
What the comparison can—and cannot—settle
Heather Gray has an LRV of 34.77; Benjamin Moore Intrigue 1580 is 24.43. The difference is 10.34 points, with Heather Gray returning more light under the reference measurement. Heather Gray carries sage undertones within a gray. 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 it to a less green gray; retain Heather Gray only if the sage contribution helps the materials. Do not read LRV 34.77 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.
Sources & notes
Color specifications: Benjamin Moore Heather Gray 2139-40. The recorded LRV is 34.77. 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. Benjamin Moore 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.