DecoMoldings

inspiration · Picture Frame

F&B Stiffkey Blue Staircase Wall Molding

F&B Stiffkey Blue Staircase Wall Molding: wall elevation, color data (LRV 10.1), staircase layout for 8, 12, 16 ft walls, cut list, calculator and pre-cut kit

Catalog snapshot View 2 sources ↓

Project calculator

Wall molding linear-foot estimate

Estimate for rectangular molding frames.

Estimated quantity109.08 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

F&B Stiffkey Blue is a dark purple with a violet undertone and a calculated LRV of 10.1. Against white trim the contrast ratio is 6.26:1, which gives clear contrast; painted tone-on-tone, the picture frame pattern shows only through its shadow lines.

Picture Frame 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 5 frames per row, each 24 in wide, with 50 in upper and 21 in lower frames. The layout uses about 37.27 m of 2.5 cm molding, or 16 sticks of 240 cm, including 10% waste. Frames follow the stair angle: keep the bottom rail parallel to the stringer.

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 F&B Stiffkey Blue

Muted violets work tone-on-tone in bedrooms; keep the sheen low on the wall.

Wall elevation

F&B Stiffkey Blue wall, tone-on-tone trim, picture frame layout on a 12 ft wall. Colors are screen approximations.

Color data

ColorBrandCodeHexCalculated LRVUndertoneDepthContrast vs white trimContrast vs black trim
F&B Stiffkey BlueFarrow & Ball#4D5B6A10.1violetdark6.26:12.37:1

Trim color pairings

PairingTrim colorHexContrastEffect
tone-on-toneF&B Stiffkey Blue#4D5B6A1:1Trim painted the same color as the wall
matching whiteBM Chantilly Lace#F4F6F16.39:1White with the closest undertone
contrastWhite#F4F3EE6.26:1Light trim for crisp contrast

Staircase 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)
8 ft326.7 in50 / 21 in23.53 m101
12 ft524 in50 / 21 in37.27 m162
16 ft627.3 in50 / 21 in47.5 m202

Cut list for a 12 ft wall

Planning cut list
PieceQuantityLength
Frame top and bottom (lower row)1024 in
Frame sides (lower row)1021 in
Frame sides (upper row)1050 in
Frame top and bottom (upper row)1024 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.

Wall Trim Molding Kit, 3 Upper, 3 Middle & 3 Bottom Frames | Pre-Cut Ready to Assemble01 / KIT

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

From $90.00

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Half Wall Ready to Assemble Factory Primed Wall Covering Half of Wall Kit | Easy Installation W:74mm T:10mm02 / KIT

Half Wall Ready to Assemble Factory Primed Wall Covering Half of Wall Kit | Easy Installation W:74mm T:10mm

From $415.00

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Bedroom Board and Batten Picture Frame Wall Molding Set, Queen & King Size Molding Kit | Easy Installation03 / KIT

Bedroom Board and Batten Picture Frame Wall Molding Set, Queen & King Size Molding Kit | Easy Installation

From $174.41

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Shadow Box Ready to Assemble Wall Molding Package, 2 Upper, 1 Center & 2 Bottom Frames | Easy Installation04 / KIT

Shadow Box Ready to Assemble Wall Molding Package, 2 Upper, 1 Center & 2 Bottom Frames | Easy Installation

From $157.00

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Wainscoting Ready to Assemble Wall Molding Package, 3 Vertical Frames | Easy Installation05 / KIT

Wainscoting Ready to Assemble Wall Molding Package, 3 Vertical Frames | Easy Installation

From $134.00

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Peel and Stick Picture Frame Molding Kit, 1 Upper & 2 Bottom Frames | Easy Installation06 / KIT

Peel and Stick Picture Frame Molding Kit, 1 Upper & 2 Bottom Frames | Easy Installation

From $224.00

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Questions

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

About 37.27 m (122 linear ft) including a chair rail and 10% waste, which is 16 sticks of 240 cm. That assumes 5 frames per row, 24 in wide, on an 8 ft ceiling.

Is F&B Stiffkey Blue warm or cool?

F&B Stiffkey Blue has a violet undertone and reads as a dark purple. Its calculated LRV is 10.1, so it absorbs light, so tone-on-tone molding reads as deep relief.

Should trim be the same color as F&B Stiffkey Blue walls?

Painting the molding the same color gives a modern, tone-on-tone finish where only shadows show the pattern. White trim adds clear contrast (6.26:1), and black trim gives 2.37:1.

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