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SW Urbane Bronze Staircase Nested Wall Molding

SW Urbane Bronze Staircase Nested Wall Molding: wall elevation, color data (LRV 8.1), staircase layout for 8, 12, 16 ft walls, cut list, calculator and pre-cu

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 Urbane Bronze is a dark gray with a warm (yellow) undertone and a calculated LRV of 8.1. Against white trim the contrast ratio is 7.21:1, which gives strong, graphic contrast; painted tone-on-tone, the nested pattern shows only through its shadow lines.

Nested layout on a 12 ft staircase 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 56.33 m of 2.5 cm molding, or 24 sticks of 240 cm, including 10% waste. Frames follow the stair angle: keep the bottom rail parallel to the stringer.

Building the nested pattern

Fix the outer frames first, then set each inner frame 4 in inside with spacer blocks so the reveal is identical on all four sides. Both frames use the same 2.5 cm profile.

Painting molding in SW Urbane Bronze

Grays sit in the middle of the contrast range: white trim reads clearly, while same-color trim gives a quiet, architectural look.

Wall elevation

SW Urbane Bronze wall, tone-on-tone trim, nested layout on a 12 ft wall. Colors are screen approximations.

Color data

ColorBrandCodeHexCalculated LRVUndertoneDepthContrast vs white trimContrast vs black trim
SW Urbane BronzeSherwin-Williams#54504A8.1warm (yellow)dark7.21:12.06:1

Trim color pairings

PairingTrim colorHexContrastEffect
tone-on-toneSW Urbane Bronze#54504A1:1Trim painted the same color as the wall
matching whiteSW Snowbound#EDEAE56.67:1White with the closest undertone
contrastWhite#F4F3EE7.21:1Light trim for crisp contrast

Staircase wall sizes: nested accent wall layout

Wall widthFrames per rowFrame widthFrame height (upper / lower)Molding incl. 10% waste240 cm sticksChair rail pieces (300 cm)
8 ft326.7 in50 / 21 in39 m171
12 ft431 in50 / 21 in56.33 m242
16 ft627.3 in50 / 21 in78.9 m332

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.

Nested Frame Nursery Wall Molding Kit, Ready to Assemble | 3 Upper & 3 Bottom Nested Frames01 / KIT

Nested Frame Nursery Wall Molding Kit, Ready to Assemble | 3 Upper & 3 Bottom Nested Frames

From $250.00

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Nested Wall Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Easy Installation02 / KIT

Nested Wall Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Easy Installation

From $277.00

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Wainscoting Accent Wall Molding Kit, 3 Upper and 2 Bottom Nested Frames | Pre-Cut & Primed03 / KIT

Wainscoting Accent Wall Molding Kit, 3 Upper and 2 Bottom Nested Frames | Pre-Cut & Primed

From $220.00

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Nested Picture Frame French Trim Wall Molding Kit, 2 Frames, Self-Adhesive Paintable04 / KIT

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

From $110.00

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Self Adhesive Accent Wall Molding Kit, 3 Upper and 2 Bottom Nested Frames | Pre-Cut & Primed05 / KIT

Self Adhesive Accent Wall Molding Kit, 3 Upper and 2 Bottom Nested Frames | Pre-Cut & Primed

From $220.00

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Nested Frame Pre-Cut Wall Molding Kit for Dining Room, 3 Upper & 3 Bottom Nested Frames | Easy Installation06 / KIT

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

From $295.00

View kit

Questions

How much molding do I need for a 12 ft staircase wall with nested frames?

About 56.33 m (185 linear ft) including a chair rail and 10% waste, which is 24 sticks of 240 cm. That assumes 4 frames per row, 31 in wide, on an 8 ft ceiling.

Is SW Urbane Bronze warm or cool?

SW Urbane Bronze has a warm (yellow) undertone and reads as a dark gray. Its calculated LRV is 8.1, so it absorbs light, so tone-on-tone molding reads as deep relief.

Should trim be the same color as SW Urbane Bronze 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 (7.21:1), and black trim gives 2.06:1.

How high should the chair rail be in a staircase?

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. Frames follow the stair angle: keep the bottom rail parallel to the stringer.

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