The decision for this particular color
Classic Gray can be considered for exterior if its color and depth suit the space; confirm exterior product, tint and substrate compatibility separately. Classic Gray's lightness makes subtle separation its useful role; demanding a strongly outlined gray wall would suggest a different brief.
Why the white trim and pale limestone relationship matters
Pale limestone and white trim can leave little value contrast, so the decision may be about whether a second neutral is needed at all.
Classic Gray has an LRV of 73.67; Benjamin Moore Pale Oak OC-20 is 68.64. The difference is 5.03 points, with Classic Gray returning more light under the reference measurement.
Read the facade in sun and shade
Place the Classic Gray 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 white trim and pale limestone 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.
Confirm the coating after the color direction
Retain it for a gentle wall-to-trim difference, not a pronounced gray outline. The coordinating color options covers that related choice.
Classic Gray 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. Before ordering samples, compare room-planning features in the paint color visualizer roundup.
Sources & notes
Color specifications: Benjamin Moore Classic Gray OC-23. The recorded LRV is 73.67. 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.

