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SW Tricorn Black Dining Room French Wall Molding

SW Tricorn Black Dining Room French Wall Molding: wall elevation, color data (LRV 2.9), dining room layout for 10, 12, 14 ft walls, cut list, calculator and p

Catalog snapshot View 2 sources ↓

Project calculator

Wall molding linear-foot estimate

Estimate for rectangular molding frames.

Estimated quantity97.53 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. Against white trim the contrast ratio is 12.04:1, which gives strong, graphic contrast; painted tone-on-tone, the french pattern shows only through its shadow lines.

French layout on a 12 ft dining room wall

Molding over the full wall height, upper and lower rows divided by a chair rail. On a 12 ft wall with an 8 ft ceiling this gives 4 frames per row, each 31 in wide, with 50 in upper and 21 in lower frames. The layout uses about 67.06 m of 2.5 cm molding, or 28 sticks of 240 cm, including 10% waste. Check that the chair rail clears chair backs, usually 32 to 36 in.

Building the french pattern

French panels add stepped inner corners: small square returns cut from the same molding replace the plain inner miter. Mark the corner squares with a template before fixing.

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, tone-on-tone trim, french layout on a 12 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

Trim color pairings

PairingTrim colorHexContrastEffect
tone-on-toneSW Tricorn Black#2F2F301:1Trim painted the same color as the wall
matching whiteF&B All White#FBF8F412.63:1White with the closest undertone
contrastWhite#F4F3EE12.04:1Light trim for crisp contrast

Dining Room wall sizes: french accent wall layout

Wall widthFrames per rowFrame widthFrame height (upper / lower)Molding incl. 10% waste240 cm sticksChair rail pieces (300 cm)
10 ft334.7 in50 / 21 in53.09 m232
12 ft431 in50 / 21 in67.06 m282
14 ft528.8 in50 / 21 in81.03 m342

Cut list for a 12 ft wall

Planning cut list
PieceQuantityLength
Frame top and bottom (lower row)831 in
Frame sides (lower row)821 in
Frame sides (upper row)850 in
Frame top and bottom (upper row)831 in
Inner frame pieces3223 in / 13 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.

French Picture Frame Wainscoting Wall Molding Kit | Self-Adhesive Easy Installation01 / KIT

French Picture Frame Wainscoting Wall Molding Kit | Self-Adhesive Easy Installation

From $189.70

View kit
French Accent Wall Trim Molding Kit, Picture Frame Paneling | Easy Installation02 / KIT

French Accent Wall Trim Molding Kit, Picture Frame Paneling | Easy Installation

From $232.74

View kit
Nested Picture Frame French Trim Wall Molding Kit, 2 Frames, Self-Adhesive Paintable03 / KIT

Nested Picture Frame French Trim Wall Molding Kit, 2 Frames, Self-Adhesive Paintable

From $110.00

View kit
French Step Corner Picture Frame Wall Molding Kit | Pre-Cut Peel and Stick Wall Molding04 / KIT

French Step Corner Picture Frame Wall Molding Kit | Pre-Cut Peel and Stick Wall Molding

From $205.56

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French Peel and Stick Wall Molding Kit, 4 Upper, 4 Middle, and 4 Bottom Frames | Easy Installation05 / KIT

French Peel and Stick Wall Molding Kit, 4 Upper, 4 Middle, and 4 Bottom Frames | Easy Installation

From $75.00

View kit

Questions

How much molding do I need for a 12 ft dining room wall with french frames?

About 67.06 m (220 linear ft) including a chair rail and 10% waste, which is 28 sticks of 240 cm. That assumes 4 frames per row, 31 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.

Should trim be the same color as SW Tricorn Black 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 (12.04:1), and black trim gives 1.23:1.

How high should the chair rail be in a dining 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. Check that the chair rail clears chair backs, usually 32 to 36 in.

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