Mirror Lake

Technical Profile

What color is Mirror Lake? It's a light cool blue with the hex code #78C5EA. Colors similar to Mirror Lake include Benjamin Moore Cayman Blue, PPG Horizon Haze, Sherwin-Williams Undercool. Comparing swatches side by side is the best way to spot the subtle differences that distinguish these close color relatives. Mirror Lake has a cool (blue) undertone, which affects how it pairs with trim, flooring, and adjacent wall colors. Understanding a color's undertone is key to avoiding combinations that clash — it often matters more than the surface color itself. Mirror Lake (#78C5EA) by Behr is a light blue paint color with a rich, saturated presence that draws the eye. It delivers a bright, welcoming quality that keeps interiors feeling fresh. On the temperature spectrum this shade carries a cool cast, lending calm and collected elegance. In its RGB breakdown, blue is the dominant channel, which gives it a subtle cool, atmospheric depth even under different lighting conditions. Its Light Reflectance Value of 72 means it reflects a healthy amount of light, keeping spaces bright without feeling stark. Light blues are classic in bathrooms, bedrooms, and coastal-themed living rooms. Eggshell or satin finishes complement light tones nicely, balancing a subtle sheen with durability for high-traffic areas. For color coordination, Mirror Lake pairs beautifully with orange tones for bold complementary contrast, or with neighboring blue and teal hues for a harmonious, flowing palette. Its cool (blue) undertone means trim and ceiling whites should lean neutral to avoid a jarring clash. If Behr is unavailable in your area, close cross-brand alternatives exist from Benjamin Moore, PPG, Sherwin-Williams and others. In terms of mood and atmosphere, Mirror Lake offers a breezy, coastal serenity that keeps spaces feeling clean and refreshed. Designers often reach for shades like this when the goal is to shape how a room feels, not just how it looks. This shade is a natural fit for nautical, classic traditional, and Hamptons-style interiors. As part of the Behr palette, Mirror Lake benefits from a curated selection of coordinating colors that the brand recommends for trim, accent, and ceiling pairings. High-LRV colors like Mirror Lake are forgiving in most lighting conditions, but they can pick up reflected color from adjacent walls, flooring, or large furniture pieces, so evaluate samples in situ. This tone works well alongside natural textures like jute rugs, bleached wood, ceramic tile, and woven baskets, building an inviting, tactile space. You can order Mirror Lake (M520-4) directly from Behr or through major paint retailers, and we recommend purchasing a peel-and-stick sample to preview it on your wall before buying gallons.