DecoMoldings

inspiration · Picture Frame

SW Tricorn Black Walls with SW Alabaster Trim

SW Tricorn Black Walls with SW Alabaster Trim: wall elevation, color data (LRV 2.9), living room layout for 12, 15, 18 ft walls, cut list, calculator and pre-

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 Tricorn Black is a very dark black with a neutral undertone and a calculated LRV of 2.9. With SW Alabaster trim the molding has strong, graphic contrast (contrast ratio 11.11:1).

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 Tricorn Black

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 Tricorn Black wall, SW Alabaster trim, picture frame layout on a 15 ft wall. Colors are screen approximations.

Color data

ColorBrandCodeHexCalculated LRVUndertoneDepthContrast vs white trimContrast vs black trim
SW Tricorn BlackSherwin-Williams#2F2F302.9neutralvery dark12.04:11.23:1
SW AlabasterSherwin-Williams#EDEAE082.2warm (yellow)white1.08:113.69:1

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.

Accent Wall Picture Frame Molding Package, Custom Panel Widths | Easy Installation01 / KIT

Accent Wall Picture Frame Molding Package, Custom Panel Widths | Easy Installation

From $53.00

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Oval Feature Accent Wall Molding Panels | Pre-Cut MDF Medium & Large02 / KIT

Oval Feature Accent Wall Molding Panels | Pre-Cut MDF Medium & Large

From $86.40

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Living Room Entryway Picture Frame Wainscoting Kit | Easy Installation03 / KIT

Living Room Entryway Picture Frame Wainscoting Kit | Easy Installation

From $51.25

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Living Room Herringbone Pattern Wall Molding Kit, Ready to Assemble for Living Areas | Pre-Cut & Primed04 / KIT

Living Room Herringbone Pattern Wall Molding Kit, Ready to Assemble for Living Areas | Pre-Cut & Primed

From $235.00

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Wall Trim Molding Kit, 3 Upper, 3 Middle & 3 Bottom Frames | Pre-Cut Ready to Assemble05 / KIT

Wall Trim Molding Kit, 3 Upper, 3 Middle & 3 Bottom Frames | Pre-Cut Ready to Assemble

From $90.00

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Instant Nested Frame Wall Trim Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Quick Easy Installation06 / KIT

Instant Nested Frame Wall Trim Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Quick Easy Installation

From $333.00

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 Tricorn Black warm or cool?

SW Tricorn Black has a neutral undertone and reads as a very dark black. Its calculated LRV is 2.9, so it absorbs light, so tone-on-tone molding reads as deep relief.

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