Undersea
Behr · S470-7
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The Analysis
Undersea is a deeply saturated, moody blue-grey that absorbs significant light, making a room feel intimate and enclosed. Because it has a low Light Reflectance Value (LRV) of 9.26, it will make large rooms feel smaller and more grounded, while potentially making small, windowless rooms feel very dark.
This is a high-impact choice best used as a bold accent wall, a dramatic cabinet colour, or for a full-room 'jewel box' effect in a study. It is too dark to function as a neutral backdrop for an entire house, as it will significantly lower the ambient light levels.
LRV 9History & Origin
This colour leans toward a modern, sophisticated aesthetic, often found in contemporary interior design rather than historical palettes. It feels fresh and tailored, avoiding the dated look of traditional 'navy' walls by introducing a nuanced, stony undertone.
How to Use It
Pair this with warm wood tones like walnut or teak to prevent the room from feeling too cold, and use matte black or polished brass hardware for contrast. It performs best in rooms where you want a moody atmosphere, such as a home office, a library, or a powder room.
The Mood
Living with this colour feels restful and stable, acting as a visual anchor that encourages focus and quiet. It avoids the agitation of bright primary colours, providing a consistent, clean backdrop that hides scuffs and shadows well.
Colour harmonies
Complementary
Opposite on the colour wheel — bold, high-contrast pairings. Use for a feature wall or furniture you want to command attention.
Analogous
Neighbouring hues — cohesive and calm, great for layered schemes that feel collected rather than matched.
Split complementary
Near-opposites for strong contrast with a little less tension than a pure complement. A favourite of interior designers.
Triadic
Three evenly spaced hues — balanced, vibrant, and versatile. Keep one dominant and use the others sparingly.
Tetradic (square)
Four hues in a square on the wheel — rich, dynamic palettes. Best when one colour leads and the others accent.
Monochromatic
Dark, mid, and light steps on the same hue — a failsafe gradient for trim, walls, and accents without shifting colour family.
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Brand Matches
Perceptually similar colours from across all brands in our database.
Lighting
See how this colour shifts across natural and artificial light conditions.
- Natural
- Morning
- Afternoon
- Evening
- Overcast
- 2700K
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