What 53 tells you about Niebla Azul
The published LRV of Sherwin-Williams Niebla Azul SW-9137 is 53. It describes light reflectance; it does not specify an undertone or predict the brightness of your room. Niebla Azul has more reflectance than deep slate blues yet enough body to be a visible light-blue wall.
The choice beside warm linen and natural wood
Natural wood and warm linen provide a reason to inspect both sunlit and shaded views rather than decide from a single cool-looking photo.
Compare Niebla Azul and Sleepy Blue 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
Niebla Azul has an LRV of 53; Sherwin-Williams Sleepy Blue SW-6225 is 58. The difference is 5 points, with Sleepy Blue returning more light under the reference measurement. Niebla Azul is a light blue with a slate-like quality. 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.
Check that the shaded wall retains an appealing blue before carrying it into an adjoining room. Do not read LRV 53 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: Sherwin-Williams Niebla Azul SW-9137. The recorded LRV is 53. 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.