Ref. #1E213D · 5013
Cobalt Blue
2%LRV Value
Cool (Violet)Undertone
Cobalt Blue Technical Profile
What color is Cobalt Blue? It's a dark warm blue with the hex code #1E213D. Cobalt Blue has a cool (violet) undertone, which affects how it pairs with trim, flooring, and adjacent wall colors. With an LRV of 2, Cobalt Blue creates a dramatic, enveloping mood — best on accent walls, dining rooms, and intimate spaces where atmosphere matters more than reflected light. Pair it with cool whites like Chantilly Lace, walnut or rift-cut oak floors, and brushed nickel or polished chrome hardware. Brass accents add warmth for a layered look. Blues stay crisp under 4000K+ cool LEDs. Under 2700K warm bulbs they can read grayer or shift slightly purple — particularly true for mid-tone and saturated blues.
Colors Similar to Cobalt Blue
Closest digital match based on color values. Always verify with physical samples.
Recommended Pairings
Colors That Work With Cobalt Blue
Timeless pairing with clean white trim and a tonal accent wall
Side Walls
Cobalt Blue
#1E213D
Accent Wall
Tonal Shift
A warm shift that adds depth without clashing.
#443856
Trim & Molding
Pure White
Crisp white trim for a clean, traditional look.
#FFFFFF
Color Palettes for Cobalt Blue
Color harmonies based on color theory — each swatch links to the closest matching paint.
Opposite on the color wheel — creates vibrant contrast
Cobalt Blue 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 RAL Colors
Other RAL colors close to Cobalt Blue.
More blue colors from other brands
Cross-brand colors in the blue family — useful when you want a similar look from a different brand.
Cobalt Blue — Frequently Asked Questions
What undertone does Cobalt Blue have?
Cobalt Blue by RAL has a cool (violet) undertone and belongs to the blue color family.
What colors match Cobalt Blue from other brands?
The closest matches are Blue Abyss Met. by MPC (#131834), Royal Robe Met. by MPC (#0E193C), Romanov Blue Met. by MPC (#15183C). Always verify with physical samples.
What is the LRV of Cobalt Blue?
Cobalt Blue has an LRV of 1.7, where 0 is pure black and 100 is pure white.
Explore More with Cobalt Blue
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 Cobalt Blue's cool (violet) undertone matters more than its surface color — and how to read undertones in any paint chip.