What Color Is #123F6E?

This color decodes to R:18 G:63 B:110, placing it in the blue region of the visible spectrum. The dark lightness level (25%) makes it a natural choice for dark overlays, footer backgrounds, and navigation bars.

Color Meaning of #123F6E

The emotional impact of #123F6E draws from the broader blue family, which signals serenity, intelligence, and authority. Its dark positioning gives it a grounded, reliable feeling favored by technology, finance, and professional services brands.

Where to Use HEX Code #123F6E

Gradient starting or ending points — 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

#214E5F
A closely related teal shade with subtle tonal variation
#002687
Similar hue with adjusted saturation for alternative design needs
#006291
Complementary teal tone for palette coordination
#3F6C41
Nearby color value offering slightly different brightness
#490837
Related red option for creating harmonious color schemes
#00802D
Adjacent shade useful for gradient transitions
#008AB9
Comparable teal alternative with distinct character

HEX Code #123F6E in Design Systems

In Tailwind CSS or similar utility frameworks, #123F6E 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 #123F6E

What color is #123F6E?
This HEX code renders as a dark blue shade on screen. Its RGB components (18, 63, 110) create a blue-dominant appearance with dark depth.
Is #123F6E a dark or light color?
Dark. The weighted luminance formula (0.299R + 0.587G + 0.114B) gives #123F6E a score of 55/255, placing it below the midpoint. This classification affects which text colors achieve adequate contrast.
What colors go well with #123F6E?
#123F6E pairs well with contrasting colors opposite it on the color wheel (≈31°) for dynamic compositions. For cohesive, calm palettes, combine it with neighboring hues at ±30° and tinted neutrals in the same blue family.
Can I use #123F6E for branding?
Yes. #123F6E works as a brand color when blue-family associations — trust, reliability, and professionalism — align with your positioning. Define it formally in your brand guidelines with permitted tints, shades, and pairing rules for consistent application.
How do I convert #123F6E to other color formats?
The full conversion: RGB(18, 63, 110), HSL(211°, 72%, 25%). CMYK values depend on the print profile but approximate C:93% M:75% Y:57% K:0%. Our converter tools handle all formats instantly.