inspiration · Picture Frame
SW Tricorn Black Living Room Wainscoting
SW Tricorn Black Living Room Wainscoting: wall elevation, color data (LRV 2.9), living room layout for 12, 15, 18 ft walls, cut list, calculator and pre-cut k
Project calculator
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 picture frame pattern shows only through its shadow lines.
Picture Frame layout on a 15 ft living room wall
Molding on the lower third of the wall under a chair rail; the upper wall stays plain. On a 15 ft wall with an 8 ft ceiling this gives 6 frames per row, each 25.3 in wide, 21 in tall. The layout uses about 20.56 m of 2.5 cm molding, or 9 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
Color data
| Color | Brand | Code | Hex | Calculated LRV | Undertone | Depth | Contrast vs white trim | Contrast vs black trim |
|---|---|---|---|---|---|---|---|---|
| SW Tricorn Black | Sherwin-Williams | #2F2F30 | 2.9 | neutral | very dark | 12.04:1 | 1.23:1 |
Trim color pairings
| Pairing | Trim color | Hex | Contrast | Effect |
|---|---|---|---|---|
| tone-on-tone | SW Tricorn Black | #2F2F30 | 1:1 | Trim painted the same color as the wall |
| matching white | F&B All White | #FBF8F4 | 12.63:1 | White with the closest undertone |
| contrast | White | #F4F3EE | 12.04:1 | Light trim for crisp contrast |
Living Room wall sizes: picture frame wainscoting layout
| Wall width | Frames per row | Frame width | Frame height (upper / lower) | Molding incl. 10% waste | 240 cm sticks | Chair rail pieces (300 cm) |
|---|---|---|---|---|---|---|
| 12 ft | 5 | 24 in | 21 in | 16.6 m | 7 | 2 |
| 15 ft | 6 | 25.3 in | 21 in | 20.56 m | 9 | 2 |
| 18 ft | 7 | 26.3 in | 21 in | 24.53 m | 11 | 2 |
Cut list for a 15 ft wall
| Piece | Quantity | Length |
|---|---|---|
| Frame top and bottom (lower row) | 12 | 25.3 in |
| Frame sides (lower row) | 12 | 21 in |
| Chair rail | 2 | 300 cm lengths |
Pre-cut kits for this wall
Pre-cut kits that fit this project. Open a kit for photos, options and pricing.
01 / KITLiving Room Entryway Picture Frame Wainscoting Kit | Easy Installation
From $51.25
View kitQuestions
How much molding do I need for a 15 ft living room wall with picture frame frames?
About 20.56 m (67 linear ft) including a chair rail and 10% waste, which is 9 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.
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 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.
- Paint color dataset (screen approximations; LRV calculated)Recorded November 11, 2026
- DecoMoldings product catalogRecorded November 11, 2026