Ref. #555C64 · 514
What color is Thunderstorm? It's a dark cool gray with the hex code #555C64. Colors similar to Thunderstorm include Vista Paint Smokey Hearth, Dunn-Edwards Blue Steel, Vista Paint Thunderstorm. Thunderstorm has a neutral undertone, which affects how it pairs with trim, flooring, and adjacent wall colors. With an LRV of 11, Thunderstorm creates a dramatic, enveloping mood — best on accent walls, dining rooms, and intimate spaces where atmosphere matters more than reflected light. As a cool neutral, Thunderstorm pairs with cool whites for trim, gray-toned or rift-cut oak floors, and brushed nickel or polished chrome hardware. Black accents and natural greenery add contrast. Cool neutrals hold their crisp quality under 4000K+ daylight bulbs. Under 2700K warm light they soften considerably — particularly true for any blue or green undertone.
Closest digital match based on color values. Always verify with physical samples.
Timeless pairing with clean white trim and a tonal accent wall

Side Walls
#555C64
Accent Wall
A warm shift that adds depth without clashing.
#605E8E
Trim & Molding
Crisp white trim for a clean, traditional look.
#FFFFFF
Color harmonies based on color theory — each swatch links to the closest matching paint.
Opposite on the color wheel — creates vibrant contrast
Color schemes built around this color — each swatch links to the closest matching paint.
Warm tones with cozy appeal — welcoming and comfortable
Cool hues with soft contrast — serene and restful
Complementary hues with punch — dynamic and striking
Other Hirshfield's colors close to Thunderstorm.
Cross-brand colors in the gray family — useful when you want a similar look from a different brand.
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 Thunderstorm's neutral undertone matters more than its surface color — and how to read undertones in any paint chip.