DecoMoldings

inspiration · Picture Frame

SW Black Magic Accent Wall Molding

SW Black Magic Accent Wall Molding: wall elevation, color data (LRV 3.1), living room layout for 12, 15, 18 ft walls, cut list, calculator and pre-cut kits.

Catalog snapshot View 2 sources ↓

Project calculator

Wall molding linear-foot estimate

Estimate for rectangular molding frames.

Estimated quantity133.76 linear feet

Divide by 7.87 ft (240 cm stick) and round up for the number of sticks.

Formula & assumptionsframe_count * 2 * (frame_width_inches + frame_height_inches) / 12 * (1 + waste_percent / 100)

Assumes identical rectangular frames. The waste allowance is editable. The estimate does not optimize cuts or include separate rails, baseboards, or other trim.

Overview

SW Black Magic is a very dark black with a neutral undertone and a calculated LRV of 3.1. Against white trim the contrast ratio is 11.66:1, which gives strong, graphic contrast; painted tone-on-tone, the picture frame pattern shows only through its shadow lines.

Picture Frame layout on a 15 ft living room wall

Molding over the full wall height, upper and lower rows divided by a chair rail. On a 15 ft wall with an 8 ft ceiling this gives 6 frames per row, each 25.3 in wide, with 50 in upper and 21 in lower frames. The layout uses about 45.82 m of 2.5 cm molding, or 20 sticks of 240 cm, including 10% waste. Center the layout on the sofa or TV rather than the wall when furniture is off-center.

Building the picture frame pattern

Each frame is four pieces of 2.5 cm molding with 45 degree miters. Set the frames out from the center of the wall, keep every gap equal, and let the margins at the corners match the gaps.

Painting molding in SW Black Magic

Near-black walls turn molding into pure relief; use a satin or semi-gloss on the trim so the profile catches light.

Wall elevation

SW Black Magic wall, tone-on-tone trim, picture frame layout on a 15 ft wall. Colors are screen approximations.

Color data

ColorBrandCodeHexCalculated LRVUndertoneDepthContrast vs white trimContrast vs black trim
SW Black MagicSherwin-Williams#3231323.1neutralvery dark11.66:11.27:1

Trim color pairings

PairingTrim colorHexContrastEffect
tone-on-toneSW Black Magic#3231321:1Trim painted the same color as the wall
matching whiteF&B All White#FBF8F412.24:1White with the closest undertone
contrastWhite#F4F3EE11.66:1Light trim for crisp contrast

Living Room wall sizes: picture frame accent wall layout

Wall widthFrames per rowFrame widthFrame height (upper / lower)Molding incl. 10% waste240 cm sticksChair rail pieces (300 cm)
12 ft524 in50 / 21 in37.27 m162
15 ft625.3 in50 / 21 in45.82 m202
18 ft726.3 in50 / 21 in54.37 m232

Cut list for a 15 ft wall

Planning cut list
PieceQuantityLength
Frame top and bottom (lower row)1225.3 in
Frame sides (lower row)1221 in
Frame sides (upper row)1250 in
Frame top and bottom (upper row)1225.3 in
Chair rail2300 cm lengths

Pre-cut kits for this wall

Pre-cut kits that fit this project. Open a kit for photos, options and pricing.

Half Wall Shadow Box Ready to Assemble Wall Paneling Package, Factory Primed Half of Wall01 / KIT

Half Wall Shadow Box Ready to Assemble Wall Paneling Package, Factory Primed Half of Wall

From $235.00

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Self-Adhesive Trim Wall Moulding 3 Upper, 3 Bottom Picture Frames, Quick Easy Installation02 / KIT

Self-Adhesive Trim Wall Moulding 3 Upper, 3 Bottom Picture Frames, Quick Easy Installation

From $75.00

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Nested Frame Pre-Cut Wall Molding Kit for Dining Room, 3 Upper & 3 Bottom Nested Frames | Easy Installation03 / KIT

Nested Frame Pre-Cut Wall Molding Kit for Dining Room, 3 Upper & 3 Bottom Nested Frames | Easy Installation

From $295.00

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Shaker Board and Batten Grid Wainscoting Kit, 1 to 5 Sets | Self-Adhesive Easy Installation04 / KIT

Shaker Board and Batten Grid Wainscoting Kit, 1 to 5 Sets | Self-Adhesive Easy Installation

From $69.80

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Chair Rail Molding Kit with Half Wall Wainscoting, 6 cm Rail | Self-Adhesive05 / KIT

Chair Rail Molding Kit with Half Wall Wainscoting, 6 cm Rail | Self-Adhesive

From $39.41

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Arch Molding Kit, 3 Widths | Flexible Pre-Cut MDF Arch Trim for Accent Walls06 / KIT

Arch Molding Kit, 3 Widths | Flexible Pre-Cut MDF Arch Trim for Accent Walls

From $58.40

View kit

Questions

How much molding do I need for a 15 ft living room wall with picture frame frames?

About 45.82 m (150 linear ft) including a chair rail and 10% waste, which is 20 sticks of 240 cm. That assumes 6 frames per row, 25.3 in wide, on an 8 ft ceiling.

Is SW Black Magic warm or cool?

SW Black Magic has a neutral undertone and reads as a very dark black. Its calculated LRV is 3.1, so it absorbs light, so tone-on-tone molding reads as deep relief.

Should trim be the same color as SW Black Magic walls?

Painting the molding the same color gives a modern, tone-on-tone finish where only shadows show the pattern. White trim adds strong, graphic contrast (11.66:1), and black trim gives 1.27:1.

How high should the chair rail be in a living room?

About one third of the ceiling height: 32 in on an 8 ft ceiling, 36 in on 9 ft and 40 in on 10 ft. Center the layout on the sofa or TV rather than the wall when furniture is off-center.

Trace the details

Sources & dates

Prices, options and photos come from our product catalog on the date shown. Layout tables are planning estimates; measure your wall before ordering.

  1. Paint color dataset (screen approximations; LRV calculated)Recorded November 11, 2026
  2. DecoMoldings product catalogRecorded November 11, 2026