IndustrialSouth-Facing

Mountain River

Valspar · 4005-6C

The Analysis

Mountain River is a deep, muted blue-grey that absorbs light rather than reflecting it. Because of its low LRV of 8.96, it will make a room feel more enclosed and intimate, effectively shrinking large, cavernous spaces to make them feel cozy.

Due to its intensity, this is best used as a bold accent color or a high-drama choice for a library or media room. It can work on all four walls if you lean into a moody, immersive look, but it is too heavy to function as a neutral backdrop.

LRV 9

History & Origin

This shade leans into a modern, sophisticated aesthetic rather than a traditional period look. Its clean, cool undertones align well with contemporary design trends that favor sharp contrasts over historical palettes.

Undertonecool
FamilyBlue

How to Use It

Pair this with warm wood tones like walnut or teak to balance the cool blue, and use brass or brushed gold hardware for a high-end finish. It works best in rooms with high-quality task lighting or plenty of lamps to prevent the space from feeling like a cave.

The Mood

This color provides a grounded, stable, and highly restful environment. It is ideal for spaces where you want to signal to your brain that it is time to slow down, making it excellent for relaxation rather than high-energy activities.

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.

Brand Matches

Perceptually similar colours from across all brands in our database.

  • Infinite Deep Sea

    Behr · S500-7

  • Atlantic Tide

    Behr · BXC-24

  • Breton Blue

    Dulux

  • Night Seas

    Dulux

  • Van Deusen Blue

    Benjamin Moore · HC-156

  • Hudson Bay

    Benjamin Moore · CC-810

Lighting

See how this colour shifts across natural and artificial light conditions.

  • Natural