Ref. #525746 · 1128-7
Castle Stone
9%LRV Value
Cool (Green)Undertone
Castle Stone Technical Profile
What color is Castle Stone? It's a dark warm gray with the hex code #525746. Colors similar to Castle Stone include Vista Paint Irish Moss, MPC Walworth Green, Sherwin-Williams Rookwood Dark Green. Castle Stone has a cool (green) undertone, which affects how it pairs with trim, flooring, and adjacent wall colors. With an LRV of 9, Castle Stone creates a dramatic, enveloping mood — best on accent walls, dining rooms, and intimate spaces where atmosphere matters more than reflected light. As a warm neutral, Castle Stone pairs with off-whites for trim, white oak or walnut floors, and brass or warm brushed nickel hardware. Deep green, navy, or terra-cotta all read well as accent colors. Warm neutrals come alive under 2700K bulbs, where their underlying yellow or peach undertones add visible warmth. Under 4000K daylight they read cleaner and slightly cooler.
Colors Similar to Castle Stone
Closest digital match based on color values. Always verify with physical samples.
Recommended Pairings
Colors That Work With Castle Stone
Timeless pairing with clean white trim and a tonal accent wall
Side Walls
Castle Stone
#525746
Accent Wall
Tonal Shift
A warm shift that adds depth without clashing.
#5C7D53
Trim & Molding
Pure White
Crisp white trim for a clean, traditional look.
#FFFFFF
Color Palettes for Castle Stone
Color harmonies based on color theory — each swatch links to the closest matching paint.
Opposite on the color wheel — creates vibrant contrast
Castle Stone Room Palettes
Color schemes built around this color — each swatch links to the closest matching paint.
Warm & Inviting
Warm tones with cozy appeal — welcoming and comfortable
Cool & Calm
Cool hues with soft contrast — serene and restful
Bold Contrast
Complementary hues with punch — dynamic and striking
Similar PPG Colors
Other PPG colors close to Castle Stone.
More gray colors from other brands
Cross-brand colors in the gray family — useful when you want a similar look from a different brand.
Castle Stone — Frequently Asked Questions
What undertone does Castle Stone have?
Castle Stone by PPG has a cool (green) undertone and belongs to the gray color family.
What colors match Castle Stone from other brands?
The closest matches are Irish Moss by Vista Paint (#505646), Walworth Green by MPC (#525742), Rookwood Dark Green by Sherwin-Williams (#565C4A). Always verify with physical samples.
What is the LRV of Castle Stone?
Castle Stone has an LRV of 9.1, where 0 is pure black and 100 is pure white.
Explore More with Castle Stone
Related Reading
How to Match Paint Colors Across Brands
The science behind Delta E and CIEDE2000 — find a Behr equivalent of any Sherwin-Williams shade, or a Benjamin Moore alternative when your store is out of stock.
Understanding Paint Color Undertones
Why Castle Stone's cool (green) undertone matters more than its surface color — and how to read undertones in any paint chip.