What Color Is #1509F1?

At 243° on the hue wheel, #1509F1 lands firmly in the blue family. Its 93% saturation gives it a vivid, attention-grabbing quality, while 49% lightness positions it as a deep variant — balanced for both text overlays and background use.

Color Meaning of #1509F1

Colors in the blue family are associated with trust, reliability, and professionalism. As a deep variant, #1509F1 amplifies those associations with depth and gravity, lending authority to any composition.

Where to Use HEX Code #1509F1

Hero sections and full-width banners where deep blue tones anchor the page hierarchy
CTA buttons and interactive elements — the deep depth ensures visibility against light backgrounds
Navigation bars and sidebar accents that need to feel grounded and persistent
Data visualization charts where this blue shade differentiates data series coherently
Icon fills and badge backgrounds that require consistent recognition across screen sizes
Email template accents where rendering fidelity across mail clients matters

Similar HEX Color Codes

#2418E2
A closely related blue shade with subtle tonal variation
#0000D8
Similar hue with adjusted saturation for alternative design needs
#0000FF
Complementary blue tone for palette coordination
#0036FF
Nearby color value offering slightly different brightness
#4C40BA
Related blue option for creating harmonious color schemes
#004AB0
Adjacent shade useful for gradient transitions
#0000FF
Comparable blue alternative with distinct character

HEX Code #1509F1 in Design Systems

To implement #1509F1 effectively in a design system, define it as a CSS custom property: :root { --color-blue-deep: #1509F1; }. This single definition propagates to every component referencing the token, and a palette update requires changing just one line.

Accessibility testing is essential. With a perceived brightness of 39/255, this shade requires white or light text for adequate WCAG contrast — aim for 4.5:1 minimum on body text. Use it as a background or accent rather than text on dark surfaces.

FAQ About HEX Color Code #1509F1

What color is #1509F1?
#1509F1 produces a deep blue tone. The RGB breakdown (21, 9, 241) shows how the three light channels combine to create this specific blue hue at 243° on the color wheel.
Is #1509F1 a dark or light color?
#1509F1 registers as a dark color at 39/255 perceived brightness. In practical terms, white (#FFFFFF) or very light text will provide the best readability.
What colors go well with #1509F1?
Complementary pairing (≈63° hue) creates energetic contrast with #1509F1. Split-complementary (±150°) adds variety with less tension. Monochromatic schemes — lighter and darker blue shades — are the safest harmonious option.
Can I use #1509F1 for branding?
#1509F1 can serve as a primary or secondary brand color. Before committing, verify it renders well in both RGB (screens) and CMYK (print), test it against competitor palettes for differentiation, and confirm it meets WCAG contrast requirements in all planned applications.
How do I convert #1509F1 to other color formats?
Convert #1509F1 to RGB(21, 9, 241) by splitting the hex into three pairs and converting each from base-16 to base-10. HSL(243°, 93%, 49%) is derived from the RGB values using the standard algorithm. Visit our HEX to HSL converter for additional formats.