HEX Color Code #343D7B

From card backgrounds to icon fills, the dark blue tone #343D7B handles a wide variety of design contexts reliably. This reference page provides its complete color data and professional application ideas.

What Color Is #343D7B?

In the HSL model, #343D7B is defined as (232°, 41%, 34%). The 232° hue angle corresponds directly to the blue portion of the color wheel. Combined with dark lightness and moderate saturation, this shade delivers subtle, sophisticated presence.

Color Meaning of #343D7B

From a psychological standpoint, #343D7B taps into blue associations of serenity, intelligence, and authority. The dark character of this specific shade means it asserts presence without overwhelming, making it effective for primary UI elements and brand identifiers.

Where to Use HEX Code #343D7B

E-commerce product card borders and "add to cart" button styling for blue-branded storefronts

Modal overlay tints — applying #343D7B at 10-20% opacity creates depth behind dialog content

Infographic accent elements where multiple blue shades build visual storytelling layers

Notification badges that remain legible against varied nav-bar backgrounds

Event and calendar UI — dark blue marks selected dates and active time slots

Slide deck title bars and presentation themes for consistent conference branding

Similar HEX Color Codes

#254C8A

#1B2494

#576058

Complementary gray tone for palette coordination

#61104E

Nearby color value offering slightly different brightness

#007444

#007E3A

Adjacent shade useful for gradient transitions

#000030

Comparable blue alternative with distinct character

HEX Code #343D7B in Design Systems

For Figma and code handoff, document #343D7B with its roles: when to use it, which backgrounds it pairs with, and which text colors sit on top of it. Include a "do / don't" section showing approved and forbidden combinations — this prevents designers from accidentally creating inaccessible pairs.

With brightness at 65/255, this shade anchors well as a dark accent. Pair with white (#FFFFFF) for maximum contrast or off-white (#F9FAFB) for a softer feel. Avoid medium grays on top, which create insufficient contrast.

FAQ About HEX Color Code #343D7B

What color is #343D7B?

Visually, #343D7B appears as dark blue. At HSL(232°, 41%, 34%), the hue sits in the blue zone with moderate saturation and dark brightness.

Is #343D7B a dark or light color?

Based on WCAG luminance weighting, #343D7B scores 65/255 — classifying it as dark. It functions well as button fills, header bars, and accent blocks with light text..

What colors go well with #343D7B?

Try combining #343D7B with shades at 52° (complementary) for bold contrast, 352° and 112° (triadic) for balanced variety, or simply lighter and darker blue values for monochromatic elegance. Use our color wheel to explore these relationships visually.

Can I use #343D7B for branding?

Yes, #343D7B works effectively for branding. The blue family communicates stability, depth, and confidence, and its dark character adds distinctiveness. Pair it with comprehensive brand guidelines specifying approved backgrounds, text treatments, and co-branding rules.

How do I convert #343D7B to other color formats?

#343D7B equals RGB(52, 61, 123) and HSL(232°, 41%, 34%). Each format serves different purposes: HEX for CSS tokens, RGB for JavaScript manipulation, and HSL for intuitive color adjustments. Our conversion tools provide all formats with one click.