HEX Color Code #043A5F

#043A5F is a very dark blue value that balances saturation and brightness for versatile screen use. This page covers everything from precise conversion values to practical usage tips for web and app design.

What Color Is #043A5F?

This color decodes to R:4 G:58 B:95, placing it in the blue region of the visible spectrum. The very dark lightness level (19%) makes it a natural choice for dark overlays, footer backgrounds, and navigation bars.

Color Meaning of #043A5F

The emotional impact of #043A5F draws from the broader blue family, which signals serenity, intelligence, and authority. Its very dark positioning gives it a grounded, reliable feeling favored by technology, finance, and professional services brands.

Where to Use HEX Code #043A5F

Gradient starting or ending points — very dark blue transitions smoothly to lighter blue tints

Table header rows and alternating row accents in data-heavy admin panels

Blog post featured image overlays where text readability over photography is essential

Pricing page accents that highlight the recommended plan without aggressive contrast

Footer background panels that clearly separate navigation from primary content

Team page avatar borders and profile accent colors for a polished, unified look

Similar HEX Color Codes

#134950

#1D2178

#27173C

Complementary blue tone for palette coordination

#00678C

Nearby color value offering slightly different brightness

#000328

#007BA0

Adjacent shade useful for gradient transitions

#4F00AA

Comparable purple alternative with distinct character

HEX Code #043A5F in Design Systems

In Tailwind CSS or similar utility frameworks, #043A5F maps to a custom color entry in your config. Place it in the 700-900 range of your blue scale. This ensures logical ordering where lower numbers are lighter and higher numbers are darker.

Accessibility note: use this shade for interactive elements (buttons, links, badges) over light surfaces, or as a background behind light-colored text. Chrome DevTools color contrast checker can verify any pairing in real time.

FAQ About HEX Color Code #043A5F

What color is #043A5F?

Visually, #043A5F appears as very dark blue. At HSL(204°, 92%, 19%), the hue sits in the blue zone with strong saturation and very dark brightness.

Is #043A5F a dark or light color?

Based on WCAG luminance weighting, #043A5F scores 46/255 — classifying it as dark. It functions well as button fills, header bars, and accent blocks with light text..

What colors go well with #043A5F?

Try combining #043A5F with shades at 24° (complementary) for bold contrast, 324° and 84° (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 #043A5F for branding?

Yes, #043A5F works effectively for branding. The blue family communicates stability, depth, and confidence, and its very dark character adds distinctiveness. Pair it with comprehensive brand guidelines specifying approved backgrounds, text treatments, and co-branding rules.

How do I convert #043A5F to other color formats?

#043A5F equals RGB(4, 58, 95) and HSL(204°, 92%, 19%). 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.