HEX Color Code #0A3491

Working with blue tones? #0A3491 sits in the dark range, bringing depth and consistency to UI kits, brand systems, and data visualizations. Explore its full technical profile and curated companion colors.

What Color Is #0A3491?

Visually, #0A3491 presents as a dark blue with rich saturation that commands attention. In the HSL model, its coordinates are (221°, 87%, 30%) — revealing a hue squarely in the blue zone with dark depth.

Color Meaning of #0A3491

#0A3491 carries the psychological weight of the blue color family — commonly linked to trust, reliability, and professionalism. At dark depth, it strikes a balance that works across cultural contexts, from corporate branding to creative portfolio design.

Where to Use HEX Code #0A3491

Section dividers and decorative borders that add rhythm without visual clutter

Progress bars and step indicators where dark blue signals completion and advancement

Tooltip and popover backgrounds that need contrast against both light and dark parent surfaces

Form field validation accents — pairing #0A3491 with semantic colors creates clear feedback hierarchies

Pull-quote backgrounds and callout boxes that draw the eye to important editorial content

Social media graphics and OG images where consistent blue branding drives recognition

Similar HEX Color Codes

#0043A0

#001BAA

#00576E

Complementary teal tone for palette coordination

#0061BE

Nearby color value offering slightly different brightness

#006BC8

#0075D2

Adjacent shade useful for gradient transitions

#550046

Comparable red alternative with distinct character

HEX Code #0A3491 in Design Systems

When integrating #0A3491 into component libraries, create at minimum: a base token, a hover variant (mixed with 10% black), an active variant (mixed with 20% black), and a disabled variant (mixed with 50% white at 60% opacity). CSS color-mix() makes this straightforward without hardcoding every variant.

Brightness check: at 50/255, this value serves best as a background for white UI text, icon labels, and button copy. Test on both sRGB monitors and mobile OLED panels where dark colors can appear more saturated.

FAQ About HEX Color Code #0A3491

What color is #0A3491?

#0A3491 is a dark blue color. In RGB terms, it combines 10 red, 52 green, and 145 blue — producing a tone that sits at 30% lightness in the HSL model.

Is #0A3491 a dark or light color?

With a perceived brightness of 50 on a 0-255 scale, #0A3491 is a dark color that requires light-colored text or elements placed on top of it. Use WCAG contrast tools to verify specific pairings.

What colors go well with #0A3491?

For maximum impact, pair #0A3491 with its complementary color (around 41° on the wheel). For softer harmony, try analogous hues at 251° and 191°. Neutrals tinted with blue undertones complete the palette.

Can I use #0A3491 for branding?

Absolutely — #0A3491 is well-suited for branding when blue aligns with your brand values. Its depth conveys authority and premium positioning. Test it across digital screens, print materials, and merchandise to ensure CMYK translation preserves the intended blue feeling.

How do I convert #0A3491 to other color formats?

#0A3491 converts to RGB(10, 52, 145) and HSL(221°, 87%, 30%). For print, calculate CMYK values relative to your printer profile. Use our HEX to RGB converter for instant conversions between any color format.