Swatchd
Sign inGet started
CoastalSouth-Facing

Sea Blue

Dulux

The Analysis

Sea Blue is a mid-tone pigment that absorbs a fair amount of light, given its LRV of 25.06. Because it isn't a pale pastel, it will make a room feel more enclosed and intimate rather than airy or expansive.

Due to its weight, it works best as a bold accent wall or in smaller, cozy spaces like a library or a moody home office. Using it on every wall in a small room will make the space feel very compact, so apply it strategically to create depth.

LRV 25

History & Origin

This is a distinctly modern, versatile blue that avoids the dusty or muted tones often found in historic palettes. It feels fresh and intentional, fitting well into contemporary interior updates rather than traditional period-style restorations.

Undertonecool
FamilyBlue

How to Use It

Pair this with warm wood tones like walnut or oak to balance the coolness of the blue. For hardware, matte black provides a sharp, high-contrast look, while brushed brass adds a refined, sophisticated touch.

The Mood

This shade provides a grounded, stable atmosphere that feels calm rather than hyper-energizing. It is a predictable, reliable blue that settles the eye, making it an excellent choice for areas where you want to reduce visual clutter.

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.

  • Waterloo

    Benjamin Moore · CSP-555

  • Boat House

    Behr · P520-5

  • Come Sail Away

    Behr · MQ4-26

  • Handsome Hue

    Behr · 570B-6

  • Picasso

    Valspar · 8001-44E

  • Warm Spring

    Behr · 560B-6

Lighting

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

  • Natural
  • Morning
  • Afternoon
  • Evening
  • Overcast
  • 2700K
  • 3500K
  • 4000K
  • 5500K