Swatchd
Sign inGet started
CoastalSouth-Facing

Coastline

Benjamin Moore · AF-570

The Analysis

Coastline is a mid-toned slate blue that absorbs more light than it reflects, given its LRV of 32.96. Because it isn’t a bright, airy white, it creates a cozy, contained feel rather than expanding the visual boundaries of a room.

This is a versatile mid-tone that works best as a main wall colour in bedrooms or studies. It serves as a strong, sophisticated backdrop that makes artwork and lighter furnishings stand out without fighting for attention.

LRV 33

History & Origin

Coastline fits comfortably into a modern transitional style. It avoids the specific cliches of period-correct palettes, serving instead as a contemporary neutral that bridges the gap between traditional and current design trends.

Undertoneneutral
FamilyBlue

How to Use It

This shade excels in rooms with ample natural light, such as a south-facing den, to balance out the intensity of the sun. Pair it with light oak wood tones or warm brass hardware to prevent the room from feeling too clinical or cold.

The Mood

Living with this colour feels grounding and remarkably restful. It avoids the coldness of icy blues, offering a steady, composed atmosphere that works well in areas intended for relaxation.

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.

  • Comet

    Benjamin Moore · 1628

  • In Good Taste 0505

    Colourtrend

  • Acier Tint

    Valspar · 4004-3C

  • Overcast Day 0512

    Colourtrend

  • Teton Blue

    Behr · N490-4

  • Steel Symphony 3

    Dulux

Lighting

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

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