inspiration · Geometric
BM Simply White Geometric Wall Molding
BM Simply White Geometric Wall Molding: wall elevation, color data (LRV 92.5), living room layout for 12, 15, 18 ft walls, cut list, calculator and pre-cut ki
Project calculator
Overview
BM Simply White (OC-117) is a white with a green undertone and a calculated LRV of 92.5. Against white trim the contrast ratio is 1.03:1, which gives almost no contrast, so the molding reads through shadow alone (a tone-on-tone look); painted tone-on-tone, the geometric pattern shows only through its shadow lines.
Geometric 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 5 frames per row, each 31.2 in wide, with 50 in upper and 21 in lower frames. The layout uses about 69.28 m of 2.5 cm molding, or 29 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 geometric pattern
Fix the outer frame, then run diagonals corner to corner. Each diagonal end is cut at the frame's angle; measure it once per frame size and reuse the cut.
Painting molding in BM Simply White
Whites show molding through shadow only, so side light (a window or wall sconce) brings the pattern out. Use satin on trim and eggshell on the wall to add a slight sheen difference.
Wall elevation
Color data
| Color | Brand | Code | Hex | Calculated LRV | Undertone | Depth | Contrast vs white trim | Contrast vs black trim |
|---|---|---|---|---|---|---|---|---|
| BM Simply White | Benjamin Moore | OC-117 | #F7F7EE | 92.5 | green | white | 1.03:1 | 15.3:1 |
Trim color pairings
| Pairing | Trim color | Hex | Contrast | Effect |
|---|---|---|---|---|
| tone-on-tone | BM Simply White | #F7F7EE | 1:1 | Trim painted the same color as the wall |
| matching white | BM White Dove | #EFEEE5 | 1.08:1 | White with the closest undertone |
| contrast | Black | #1F1F1F | 15.3:1 | Dark trim for a graphic outline |
Living Room wall sizes: geometric accent wall 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 | 4 | 31 in | 50 / 21 in | 55.27 m | 24 | 2 |
| 15 ft | 5 | 31.2 in | 50 / 21 in | 69.28 m | 29 | 2 |
| 18 ft | 6 | 31.3 in | 50 / 21 in | 83.28 m | 35 | 2 |
Cut list for a 15 ft wall
| Piece | Quantity | Length |
|---|---|---|
| Frame top and bottom (lower row) | 10 | 31.2 in |
| Frame sides (lower row) | 10 | 21 in |
| Frame sides (upper row) | 10 | 50 in |
| Frame top and bottom (upper row) | 10 | 31.2 in |
| Diagonal pieces | 20 | 37.6 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 / KITGeometric Asymmetric Wall Molding Kit, Easy Installation for Living Areas | Pre-Cut & Primed
From $202.00
View kit
02 / KITGeometric Chevron Accent Wall Molding Kit, Pre-Cut | Easy Installation
From $232.74
View kit
03 / KITModern Geometric Wainscoting Design Wall Molding Kit, Ready to Assemble | Pre-Cut & Primed
From $103.00
View kitQuestions
How much molding do I need for a 15 ft living room wall with geometric frames?
About 69.28 m (227 linear ft) including a chair rail and 10% waste, which is 29 sticks of 240 cm. That assumes 5 frames per row, 31.2 in wide, on an 8 ft ceiling.
Is BM Simply White warm or cool?
BM Simply White has a green undertone and reads as a white white. Its calculated LRV is 92.5, so it reflects a lot of light and keeps molding shadows soft.
Should trim be the same color as BM Simply White walls?
Painting the molding the same color gives a modern, tone-on-tone finish where only shadows show the pattern. White trim adds almost no contrast, so the molding reads through shadow alone (a tone-on-tone look) (1.03:1), and black trim gives 15.3:1.
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