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Sherwin-Williams SW-9137 / Color character

Is Niebla Azul Warm or Cool? Color Character in Context

Niebla Azul is a light blue with a slate-like quality. Temperature is a useful description, but neighboring materials can change the impression.

Color guide · Updated September 23, 2026

Sitting room with muted blue walls, warm wood and cream upholstery

Start with the documented color character

Niebla Azul is a light blue with a slate-like quality. Temperature is a useful description, but neighboring materials can change the impression. Niebla Azul has more reflectance than deep slate blues yet enough body to be a visible light-blue wall.

Why the warm linen and natural wood relationship matters

Natural wood and warm linen provide a reason to inspect both sunlit and shaded views rather than decide from a single cool-looking photo.

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. Sleepy Blue is a light blue described as warm by Sherwin-Williams. This supplies a named color control; the LRV gap alone does not identify the warmer, greener or pinker paint.

Use Sleepy Blue as a control

Use a warmer and a cooler object already in the room to assess Niebla Azul, keeping their real proportions visible. The target is a coherent relationship with warm linen and natural wood. Do not assume that every blue behaves alike or that all greens belong on the same side of a temperature label.

Separate a persistent cast from a comparison effect

Check that the shaded wall retains an appealing blue before carrying it into an adjoining room. The undertones and neighboring colors covers that related choice.

Judge the temperature description against the full warm linen and natural wood arrangement. A warm or cool label is a useful starting category; it cannot guarantee that Niebla Azul agrees with every material assigned the same label. The wood-floor pairing guide 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.