Ref. #3FEFAF · 500B-5
What color is Mermaid Treasure? It's a light cool green with the hex code #3FEFAF. Mermaid Treasure is a distinctive shade in the Behr lineup, and while close cross-brand equivalents exist, its specific blend of cool tone and light depth gives it a character worth comparing in person. Mermaid Treasure has a cool (green) 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. Mermaid Treasure (#3FEFAF) by Behr is a light green paint color with a striking intensity that commands attention. 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, green is the dominant channel, which gives it a subtle earthy, organic quality even under different lighting conditions. Its Light Reflectance Value of 77 means it reflects a healthy amount of light, keeping spaces bright without feeling stark. Light sage and mint greens feel fresh in kitchens, guest bedrooms, and garden-view rooms. Eggshell or satin finishes complement light tones nicely, balancing a subtle sheen with durability for high-traffic areas. For color coordination, Mermaid Treasure pairs beautifully with red tones for bold complementary contrast, or with neighboring teal and green hues for a harmonious, flowing palette. Its cool (green) undertone means trim and ceiling whites should lean neutral to avoid a jarring clash. In terms of mood and atmosphere, Mermaid Treasure 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 organic modern, biophilic, and mid-century aesthetics. As part of the Behr palette, Mermaid Treasure benefits from a curated selection of coordinating colors that the brand recommends for trim, accent, and ceiling pairings. High-LRV colors like Mermaid Treasure 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 Mermaid Treasure (500B-5) 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.
Timeless pairing with clean white trim and a tonal accent wall

Side Walls
#3FEFAF
Accent Wall
A warm shift that adds depth without clashing.
#65BFCD
Trim & Molding
Crisp white trim for a clean, traditional look.
#FFFFFF
Color harmonies based on color theory — each swatch links to the closest matching paint.
Opposite on the color wheel — creates vibrant contrast
Other Behr colors close to Mermaid Treasure.
Closest digital match based on color values. Always verify with physical samples.
#48FE9F
© 2026 Paint Color HQ. Color data is approximate. Always verify with physical samples before purchasing.
Color schemes built around this color — each swatch links to the closest matching paint.
Warm tones with cozy appeal — welcoming and comfortable
Cool hues with soft contrast — serene and restful
Complementary hues with punch — dynamic and striking